October 1 update. Our PDGM and ICD-10 tools now use the FY2027 code set: 190 codes added, 30 deleted, and no existing code changed clinical group.

See what changed

ICD-10 · PDGM grouping

T46 Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system

All 198 codes in the T46 family, with the PDGM clinical group, comorbidity subgroup and primary-position rule CMS assigns, read from the CMS grouper crosswalk v07.2.26 and the CDC FY2027 code file.

ICD-10-CM FY2027 · CMS grouper v07.2.26

Codes in family

198

Can lead a claim

132

Cannot lead a claim

66

What CMS assigns to T46

132 of the 198 codes group to MMTA - Other; 66 are assigned no clinical group. None of the 198 is assigned a comorbidity subgroup. 132 of the 198 can lead a claim.

Every code in T46

Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
T46.0 Poisoning by, adverse effect of and underdosing of cardiac-stimulant glycosides and drugs of similar action
T46.0X Poisoning by, adverse effect of and underdosing of cardiac-stimulant glycosides and drugs of similar action
T46.0X1 Poisoning by cardiac-stimulant glycosides and drugs of similar action, accidental (unintentional)
T46.0X1APoisoning by cardiac-stimulant glycosides and drugs of similar action, accidental (unintentional), initial encounterCMS: Poisoning by cardi-stim glycos/drug simlar act, acc, initCan lead a claimANone
T46.0X1DPoisoning by cardiac-stimulant glycosides and drugs of similar action, accidental (unintentional), subsequent encounterCMS: Poisoning by cardi-stim glycos/drug simlar act, acc, subsCan lead a claimANone
T46.0X1SPoisoning by cardiac-stimulant glycosides and drugs of similar action, accidental (unintentional), sequelaCMS: Poisn by cardi-stim glycos/drug simlar act, acc, sequelaCan lead a claimANone
T46.0X2 Poisoning by cardiac-stimulant glycosides and drugs of similar action, intentional self-harm
T46.0X2APoisoning by cardiac-stimulant glycosides and drugs of similar action, intentional self-harm, initial encounterCMS: Poisn by cardi-stim glycos/drug simlar act, self-harm, initCan lead a claimANone
T46.0X2DPoisoning by cardiac-stimulant glycosides and drugs of similar action, intentional self-harm, subsequent encounterCMS: Poisn by cardi-stim glycos/drug simlar act, self-harm, subsCan lead a claimANone
T46.0X2SPoisoning by cardiac-stimulant glycosides and drugs of similar action, intentional self-harm, sequelaCMS: Poisn by cardi-stim glycos/drug simlar act, slf-hrm, sequelaCan lead a claimANone
T46.0X3 Poisoning by cardiac-stimulant glycosides and drugs of similar action, assault
T46.0X3APoisoning by cardiac-stimulant glycosides and drugs of similar action, assault, initial encounterCMS: Poisn by cardi-stim glycos/drug simlar act, assault, initCan lead a claimANone
T46.0X3DPoisoning by cardiac-stimulant glycosides and drugs of similar action, assault, subsequent encounterCMS: Poisn by cardi-stim glycos/drug simlar act, assault, subsCan lead a claimANone
T46.0X3SPoisoning by cardiac-stimulant glycosides and drugs of similar action, assault, sequelaCMS: Poisn by cardi-stim glycos/drug simlar act, assault, sequelaCan lead a claimANone
T46.0X4 Poisoning by cardiac-stimulant glycosides and drugs of similar action, undetermined
T46.0X4APoisoning by cardiac-stimulant glycosides and drugs of similar action, undetermined, initial encounterCMS: Poisoning by cardi-stim glycos/drug simlar act, undet, initCan lead a claimANone
T46.0X4DPoisoning by cardiac-stimulant glycosides and drugs of similar action, undetermined, subsequent encounterCMS: Poisoning by cardi-stim glycos/drug simlar act, undet, subsCan lead a claimANone
T46.0X4SPoisoning by cardiac-stimulant glycosides and drugs of similar action, undetermined, sequelaCMS: Poisn by cardi-stim glycos/drug simlar act, undet, sequelaCan lead a claimANone
T46.0X5 Adverse effect of cardiac-stimulant glycosides and drugs of similar action
T46.0X5AAdverse effect of cardiac-stimulant glycosides and drugs of similar action, initial encounterCMS: Adverse effect of cardi-stim glycos/drug simlar act, initCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.0X5DAdverse effect of cardiac-stimulant glycosides and drugs of similar action, subsequent encounterCMS: Adverse effect of cardi-stim glycos/drug simlar act, subsCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.0X5SAdverse effect of cardiac-stimulant glycosides and drugs of similar action, sequelaCMS: Adverse effect of cardi-stim glycos/drug simlar act, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.0X6 Underdosing of cardiac-stimulant glycosides and drugs of similar action
T46.0X6AUnderdosing of cardiac-stimulant glycosides and drugs of similar action, initial encounterCMS: Underdosing of cardi-stim glycos/drug simlar act, initCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.0X6DUnderdosing of cardiac-stimulant glycosides and drugs of similar action, subsequent encounterCMS: Underdosing of cardi-stim glycos/drug simlar act, subsCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.0X6SUnderdosing of cardiac-stimulant glycosides and drugs of similar action, sequelaCMS: Underdosing of cardi-stim glycos/drug simlar act, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.1 Poisoning by, adverse effect of and underdosing of calcium-channel blockers
T46.1X Poisoning by, adverse effect of and underdosing of calcium-channel blockers
T46.1X1 Poisoning by calcium-channel blockers, accidental (unintentional)
T46.1X1APoisoning by calcium-channel blockers, accidental (unintentional), initial encounterCMS: Poisoning by calcium-channel blockers, accidental, initCan lead a claimANone
T46.1X1DPoisoning by calcium-channel blockers, accidental (unintentional), subsequent encounterCMS: Poisoning by calcium-channel blockers, accidental, subsCan lead a claimANone
T46.1X1SPoisoning by calcium-channel blockers, accidental (unintentional), sequelaCMS: Poisoning by calcium-channel blockers, accidental, sequelaCan lead a claimANone
T46.1X2 Poisoning by calcium-channel blockers, intentional self-harm
T46.1X2APoisoning by calcium-channel blockers, intentional self-harm, initial encounterCMS: Poisoning by calcium-channel blockers, self-harm, initCan lead a claimANone
T46.1X2DPoisoning by calcium-channel blockers, intentional self-harm, subsequent encounterCMS: Poisoning by calcium-channel blockers, self-harm, subsCan lead a claimANone
T46.1X2SPoisoning by calcium-channel blockers, intentional self-harm, sequelaCMS: Poisoning by calcium-channel blockers, self-harm, sequelaCan lead a claimANone
T46.1X3 Poisoning by calcium-channel blockers, assault
T46.1X3APoisoning by calcium-channel blockers, assault, initial encounterCMS: Poisoning by calcium-channel blockers, assault, init encntrCan lead a claimANone
T46.1X3DPoisoning by calcium-channel blockers, assault, subsequent encounterCMS: Poisoning by calcium-channel blockers, assault, subs encntrCan lead a claimANone
T46.1X3SPoisoning by calcium-channel blockers, assault, sequelaCan lead a claimANone
T46.1X4 Poisoning by calcium-channel blockers, undetermined
T46.1X4APoisoning by calcium-channel blockers, undetermined, initial encounterCMS: Poisoning by calcium-channel blockers, undetermined, initCan lead a claimANone
T46.1X4DPoisoning by calcium-channel blockers, undetermined, subsequent encounterCMS: Poisoning by calcium-channel blockers, undetermined, subsCan lead a claimANone
T46.1X4SPoisoning by calcium-channel blockers, undetermined, sequelaCan lead a claimANone
T46.1X5 Adverse effect of calcium-channel blockers
T46.1X5AAdverse effect of calcium-channel blockers, initial encounterCMS: Adverse effect of calcium-channel blockers, init encntrCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.1X5DAdverse effect of calcium-channel blockers, subsequent encounterCMS: Adverse effect of calcium-channel blockers, subs encntrCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.1X5SAdverse effect of calcium-channel blockers, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.1X6 Underdosing of calcium-channel blockers
T46.1X6AUnderdosing of calcium-channel blockers, initial encounterCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.1X6DUnderdosing of calcium-channel blockers, subsequent encounterCMS: Underdosing of calcium-channel blockers, subs encntrCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.1X6SUnderdosing of calcium-channel blockers, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.2 Poisoning by, adverse effect of and underdosing of other antidysrhythmic drugs, not elsewhere classified
T46.2X Poisoning by, adverse effect of and underdosing of other antidysrhythmic drugs
T46.2X1 Poisoning by other antidysrhythmic drugs, accidental (unintentional)
T46.2X1APoisoning by other antidysrhythmic drugs, accidental (unintentional), initial encounterCMS: Poisoning by oth antidysrhythmic drugs, accidental, initCan lead a claimANone
T46.2X1DPoisoning by other antidysrhythmic drugs, accidental (unintentional), subsequent encounterCMS: Poisoning by oth antidysrhythmic drugs, accidental, subsCan lead a claimANone
T46.2X1SPoisoning by other antidysrhythmic drugs, accidental (unintentional), sequelaCMS: Poisoning by oth antidysrhythmic drugs, accidental, sequelaCan lead a claimANone
T46.2X2 Poisoning by other antidysrhythmic drugs, intentional self-harm
T46.2X2APoisoning by other antidysrhythmic drugs, intentional self-harm, initial encounterCMS: Poisoning by oth antidysrhythmic drugs, self-harm, initCan lead a claimANone
T46.2X2DPoisoning by other antidysrhythmic drugs, intentional self-harm, subsequent encounterCMS: Poisoning by oth antidysrhythmic drugs, self-harm, subsCan lead a claimANone
T46.2X2SPoisoning by other antidysrhythmic drugs, intentional self-harm, sequelaCMS: Poisoning by oth antidysrhythmic drugs, self-harm, sequelaCan lead a claimANone
T46.2X3 Poisoning by other antidysrhythmic drugs, assault
T46.2X3APoisoning by other antidysrhythmic drugs, assault, initial encounterCMS: Poisoning by oth antidysrhythmic drugs, assault, init encntrCan lead a claimANone
T46.2X3DPoisoning by other antidysrhythmic drugs, assault, subsequent encounterCMS: Poisoning by oth antidysrhythmic drugs, assault, subs encntrCan lead a claimANone
T46.2X3SPoisoning by other antidysrhythmic drugs, assault, sequelaCan lead a claimANone
T46.2X4 Poisoning by other antidysrhythmic drugs, undetermined
T46.2X4APoisoning by other antidysrhythmic drugs, undetermined, initial encounterCMS: Poisoning by oth antidysrhythmic drugs, undetermined, initCan lead a claimANone
T46.2X4DPoisoning by other antidysrhythmic drugs, undetermined, subsequent encounterCMS: Poisoning by oth antidysrhythmic drugs, undetermined, subsCan lead a claimANone
T46.2X4SPoisoning by other antidysrhythmic drugs, undetermined, sequelaCMS: Poisoning by oth antidysrhy drugs, undetermined, sequelaCan lead a claimANone
T46.2X5 Adverse effect of other antidysrhythmic drugs
T46.2X5AAdverse effect of other antidysrhythmic drugs, initial encounterCMS: Adverse effect of other antidysrhythmic drugs, init encntrCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.2X5DAdverse effect of other antidysrhythmic drugs, subsequent encounterCMS: Adverse effect of other antidysrhythmic drugs, subs encntrCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.2X5SAdverse effect of other antidysrhythmic drugs, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.2X6 Underdosing of other antidysrhythmic drugs
T46.2X6AUnderdosing of other antidysrhythmic drugs, initial encounterCMS: Underdosing of other antidysrhythmic drugs, init encntrCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.2X6DUnderdosing of other antidysrhythmic drugs, subsequent encounterCMS: Underdosing of other antidysrhythmic drugs, subs encntrCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.2X6SUnderdosing of other antidysrhythmic drugs, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.3 Poisoning by, adverse effect of and underdosing of coronary vasodilators
T46.3X Poisoning by, adverse effect of and underdosing of coronary vasodilators
T46.3X1 Poisoning by coronary vasodilators, accidental (unintentional)
T46.3X1APoisoning by coronary vasodilators, accidental (unintentional), initial encounterCMS: Poisoning by coronary vasodilators, accidental, initCan lead a claimANone
T46.3X1DPoisoning by coronary vasodilators, accidental (unintentional), subsequent encounterCMS: Poisoning by coronary vasodilators, accidental, subsCan lead a claimANone
T46.3X1SPoisoning by coronary vasodilators, accidental (unintentional), sequelaCMS: Poisoning by coronary vasodilators, accidental, sequelaCan lead a claimANone
T46.3X2 Poisoning by coronary vasodilators, intentional self-harm
T46.3X2APoisoning by coronary vasodilators, intentional self-harm, initial encounterCMS: Poisoning by coronary vasodilators, self-harm, initCan lead a claimANone
T46.3X2DPoisoning by coronary vasodilators, intentional self-harm, subsequent encounterCMS: Poisoning by coronary vasodilators, self-harm, subsCan lead a claimANone
T46.3X2SPoisoning by coronary vasodilators, intentional self-harm, sequelaCMS: Poisoning by coronary vasodilators, self-harm, sequelaCan lead a claimANone
T46.3X3 Poisoning by coronary vasodilators, assault
T46.3X3APoisoning by coronary vasodilators, assault, initial encounterCMS: Poisoning by coronary vasodilators, assault, init encntrCan lead a claimANone
T46.3X3DPoisoning by coronary vasodilators, assault, subsequent encounterCMS: Poisoning by coronary vasodilators, assault, subs encntrCan lead a claimANone
T46.3X3SPoisoning by coronary vasodilators, assault, sequelaCan lead a claimANone
T46.3X4 Poisoning by coronary vasodilators, undetermined
T46.3X4APoisoning by coronary vasodilators, undetermined, initial encounterCMS: Poisoning by coronary vasodilators, undetermined, initCan lead a claimANone
T46.3X4DPoisoning by coronary vasodilators, undetermined, subsequent encounterCMS: Poisoning by coronary vasodilators, undetermined, subsCan lead a claimANone
T46.3X4SPoisoning by coronary vasodilators, undetermined, sequelaCan lead a claimANone
T46.3X5 Adverse effect of coronary vasodilators
T46.3X5AAdverse effect of coronary vasodilators, initial encounterCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.3X5DAdverse effect of coronary vasodilators, subsequent encounterCMS: Adverse effect of coronary vasodilators, subs encntrCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.3X5SAdverse effect of coronary vasodilators, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.3X6 Underdosing of coronary vasodilators
T46.3X6AUnderdosing of coronary vasodilators, initial encounterCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.3X6DUnderdosing of coronary vasodilators, subsequent encounterCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.3X6SUnderdosing of coronary vasodilators, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.4 Poisoning by, adverse effect of and underdosing of angiotensin-converting-enzyme inhibitors
T46.4X Poisoning by, adverse effect of and underdosing of angiotensin-converting-enzyme inhibitors
T46.4X1 Poisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional)
T46.4X1APoisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional), initial encounterCMS: Poisoning by angiotens-convert-enzyme inhibitors, acc, initCan lead a claimANone
T46.4X1DPoisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional), subsequent encounterCMS: Poisoning by angiotens-convert-enzyme inhibitors, acc, subsCan lead a claimANone
T46.4X1SPoisoning by angiotensin-converting-enzyme inhibitors, accidental (unintentional), sequelaCMS: Poisoning by angiotens-convert-enzyme inhibtr, acc, sequelaCan lead a claimANone
T46.4X2 Poisoning by angiotensin-converting-enzyme inhibitors, intentional self-harm
T46.4X2APoisoning by angiotensin-converting-enzyme inhibitors, intentional self-harm, initial encounterCMS: Poisn by angiotens-convert-enzyme inhibtr, self-harm, initCan lead a claimANone
T46.4X2DPoisoning by angiotensin-converting-enzyme inhibitors, intentional self-harm, subsequent encounterCMS: Poisn by angiotens-convert-enzyme inhibtr, self-harm, subsCan lead a claimANone
T46.4X2SPoisoning by angiotensin-converting-enzyme inhibitors, intentional self-harm, sequelaCMS: Poisn by angiotens-convert-enzyme inhibtr, slf-hrm, sequelaCan lead a claimANone
T46.4X3 Poisoning by angiotensin-converting-enzyme inhibitors, assault
T46.4X3APoisoning by angiotensin-converting-enzyme inhibitors, assault, initial encounterCMS: Poisoning by angiotens-convert-enzyme inhibtr, assault, initCan lead a claimANone
T46.4X3DPoisoning by angiotensin-converting-enzyme inhibitors, assault, subsequent encounterCMS: Poisoning by angiotens-convert-enzyme inhibtr, assault, subsCan lead a claimANone
T46.4X3SPoisoning by angiotensin-converting-enzyme inhibitors, assault, sequelaCMS: Poisn by angiotens-convert-enzyme inhibtr, assault, sequelaCan lead a claimANone
T46.4X4 Poisoning by angiotensin-converting-enzyme inhibitors, undetermined
T46.4X4APoisoning by angiotensin-converting-enzyme inhibitors, undetermined, initial encounterCMS: Poisoning by angiotens-convert-enzyme inhibtr, undet, initCan lead a claimANone
T46.4X4DPoisoning by angiotensin-converting-enzyme inhibitors, undetermined, subsequent encounterCMS: Poisoning by angiotens-convert-enzyme inhibtr, undet, subsCan lead a claimANone
T46.4X4SPoisoning by angiotensin-converting-enzyme inhibitors, undetermined, sequelaCMS: Poisn by angiotens-convert-enzyme inhibtr, undet, sequelaCan lead a claimANone
T46.4X5 Adverse effect of angiotensin-converting-enzyme inhibitors
T46.4X5AAdverse effect of angiotensin-converting-enzyme inhibitors, initial encounterCMS: Adverse effect of angiotens-convert-enzyme inhibitors, initCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.4X5DAdverse effect of angiotensin-converting-enzyme inhibitors, subsequent encounterCMS: Adverse effect of angiotens-convert-enzyme inhibitors, subsCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.4X5SAdverse effect of angiotensin-converting-enzyme inhibitors, sequelaCMS: Adverse effect of angiotens-convert-enzyme inhibtr, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.4X6 Underdosing of angiotensin-converting-enzyme inhibitors
T46.4X6AUnderdosing of angiotensin-converting-enzyme inhibitors, initial encounterCMS: Underdosing of angiotens-convert-enzyme inhibitors, initCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.4X6DUnderdosing of angiotensin-converting-enzyme inhibitors, subsequent encounterCMS: Underdosing of angiotens-convert-enzyme inhibitors, subsCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.4X6SUnderdosing of angiotensin-converting-enzyme inhibitors, sequelaCMS: Underdosing of angiotens-convert-enzyme inhibitors, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.5 Poisoning by, adverse effect of and underdosing of other antihypertensive drugs
T46.5X Poisoning by, adverse effect of and underdosing of other antihypertensive drugs
T46.5X1 Poisoning by other antihypertensive drugs, accidental (unintentional)
T46.5X1APoisoning by other antihypertensive drugs, accidental (unintentional), initial encounterCMS: Poisoning by oth antihypertn drugs, accidental, initCan lead a claimANone
T46.5X1DPoisoning by other antihypertensive drugs, accidental (unintentional), subsequent encounterCMS: Poisoning by oth antihypertn drugs, accidental, subsCan lead a claimANone
T46.5X1SPoisoning by other antihypertensive drugs, accidental (unintentional), sequelaCMS: Poisoning by oth antihypertn drugs, accidental, sequelaCan lead a claimANone
T46.5X2 Poisoning by other antihypertensive drugs, intentional self-harm
T46.5X2APoisoning by other antihypertensive drugs, intentional self-harm, initial encounterCMS: Poisoning by oth antihypertensive drugs, self-harm, initCan lead a claimANone
T46.5X2DPoisoning by other antihypertensive drugs, intentional self-harm, subsequent encounterCMS: Poisoning by oth antihypertensive drugs, self-harm, subsCan lead a claimANone
T46.5X2SPoisoning by other antihypertensive drugs, intentional self-harm, sequelaCMS: Poisoning by oth antihypertensive drugs, self-harm, sequelaCan lead a claimANone
T46.5X3 Poisoning by other antihypertensive drugs, assault
T46.5X3APoisoning by other antihypertensive drugs, assault, initial encounterCMS: Poisoning by oth antihypertensive drugs, assault, initCan lead a claimANone
T46.5X3DPoisoning by other antihypertensive drugs, assault, subsequent encounterCMS: Poisoning by oth antihypertensive drugs, assault, subsCan lead a claimANone
T46.5X3SPoisoning by other antihypertensive drugs, assault, sequelaCan lead a claimANone
T46.5X4 Poisoning by other antihypertensive drugs, undetermined
T46.5X4APoisoning by other antihypertensive drugs, undetermined, initial encounterCMS: Poisoning by oth antihypertensive drugs, undetermined, initCan lead a claimANone
T46.5X4DPoisoning by other antihypertensive drugs, undetermined, subsequent encounterCMS: Poisoning by oth antihypertensive drugs, undetermined, subsCan lead a claimANone
T46.5X4SPoisoning by other antihypertensive drugs, undetermined, sequelaCMS: Poisoning by oth antihypertn drugs, undetermined, sequelaCan lead a claimANone
T46.5X5 Adverse effect of other antihypertensive drugs
T46.5X5AAdverse effect of other antihypertensive drugs, initial encounterCMS: Adverse effect of other antihypertensive drugs, init encntrCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.5X5DAdverse effect of other antihypertensive drugs, subsequent encounterCMS: Adverse effect of other antihypertensive drugs, subs encntrCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.5X5SAdverse effect of other antihypertensive drugs, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.5X6 Underdosing of other antihypertensive drugs
T46.5X6AUnderdosing of other antihypertensive drugs, initial encounterCMS: Underdosing of other antihypertensive drugs, init encntrCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.5X6DUnderdosing of other antihypertensive drugs, subsequent encounterCMS: Underdosing of other antihypertensive drugs, subs encntrCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.5X6SUnderdosing of other antihypertensive drugs, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.6 Poisoning by, adverse effect of and underdosing of antihyperlipidemic and antiarteriosclerotic drugs
T46.6X Poisoning by, adverse effect of and underdosing of antihyperlipidemic and antiarteriosclerotic drugs
T46.6X1 Poisoning by antihyperlipidemic and antiarteriosclerotic drugs, accidental (unintentional)
T46.6X1APoisoning by antihyperlipidemic and antiarteriosclerotic drugs, accidental (unintentional), initial encounterCMS: Poisoning by antihyperlip and antiarterio drugs, acc, initCan lead a claimANone
T46.6X1DPoisoning by antihyperlipidemic and antiarteriosclerotic drugs, accidental (unintentional), subsequent encounterCMS: Poisoning by antihyperlip and antiarterio drugs, acc, subsCan lead a claimANone
T46.6X1SPoisoning by antihyperlipidemic and antiarteriosclerotic drugs, accidental (unintentional), sequelaCMS: Poisn by antihyperlip and antiarterio drugs, acc, sequelaCan lead a claimANone
T46.6X2 Poisoning by antihyperlipidemic and antiarteriosclerotic drugs, intentional self-harm
T46.6X2APoisoning by antihyperlipidemic and antiarteriosclerotic drugs, intentional self-harm, initial encounterCMS: Poisn by antihyperlip and antiarterio drugs, self-harm, initCan lead a claimANone
T46.6X2DPoisoning by antihyperlipidemic and antiarteriosclerotic drugs, intentional self-harm, subsequent encounterCMS: Poisn by antihyperlip and antiarterio drugs, self-harm, subsCan lead a claimANone
T46.6X2SPoisoning by antihyperlipidemic and antiarteriosclerotic drugs, intentional self-harm, sequelaCMS: Poisn by antihyperlip and antiarterio drugs, slf-hrm, sqlaCan lead a claimANone
T46.6X3 Poisoning by antihyperlipidemic and antiarteriosclerotic drugs, assault
T46.6X3APoisoning by antihyperlipidemic and antiarteriosclerotic drugs, assault, initial encounterCMS: Poisn by antihyperlip and antiarterio drugs, assault, initCan lead a claimANone
T46.6X3DPoisoning by antihyperlipidemic and antiarteriosclerotic drugs, assault, subsequent encounterCMS: Poisn by antihyperlip and antiarterio drugs, assault, subsCan lead a claimANone
T46.6X3SPoisoning by antihyperlipidemic and antiarteriosclerotic drugs, assault, sequelaCMS: Poisn by antihyperlip and antiarterio drugs, asslt, sequelaCan lead a claimANone
T46.6X4 Poisoning by antihyperlipidemic and antiarteriosclerotic drugs, undetermined
T46.6X4APoisoning by antihyperlipidemic and antiarteriosclerotic drugs, undetermined, initial encounterCMS: Poisoning by antihyperlip and antiarterio drugs, undet, initCan lead a claimANone
T46.6X4DPoisoning by antihyperlipidemic and antiarteriosclerotic drugs, undetermined, subsequent encounterCMS: Poisoning by antihyperlip and antiarterio drugs, undet, subsCan lead a claimANone
T46.6X4SPoisoning by antihyperlipidemic and antiarteriosclerotic drugs, undetermined, sequelaCMS: Poisn by antihyperlip and antiarterio drugs, undet, sequelaCan lead a claimANone
T46.6X5 Adverse effect of antihyperlipidemic and antiarteriosclerotic drugs
T46.6X5AAdverse effect of antihyperlipidemic and antiarteriosclerotic drugs, initial encounterCMS: Adverse effect of antihyperlip and antiarterio drugs, initCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.6X5DAdverse effect of antihyperlipidemic and antiarteriosclerotic drugs, subsequent encounterCMS: Adverse effect of antihyperlip and antiarterio drugs, subsCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.6X5SAdverse effect of antihyperlipidemic and antiarteriosclerotic drugs, sequelaCMS: Advrs effect of antihyperlip and antiarterio drugs, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.6X6 Underdosing of antihyperlipidemic and antiarteriosclerotic drugs
T46.6X6AUnderdosing of antihyperlipidemic and antiarteriosclerotic drugs, initial encounterCMS: Underdosing of antihyperlip and antiarterio drugs, initCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.6X6DUnderdosing of antihyperlipidemic and antiarteriosclerotic drugs, subsequent encounterCMS: Underdosing of antihyperlip and antiarterio drugs, subsCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.6X6SUnderdosing of antihyperlipidemic and antiarteriosclerotic drugs, sequelaCMS: Underdosing of antihyperlip and antiarterio drugs, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.7 Poisoning by, adverse effect of and underdosing of peripheral vasodilators
T46.7X Poisoning by, adverse effect of and underdosing of peripheral vasodilators
T46.7X1 Poisoning by peripheral vasodilators, accidental (unintentional)
T46.7X1APoisoning by peripheral vasodilators, accidental (unintentional), initial encounterCMS: Poisoning by peripheral vasodilators, accidental, initCan lead a claimANone
T46.7X1DPoisoning by peripheral vasodilators, accidental (unintentional), subsequent encounterCMS: Poisoning by peripheral vasodilators, accidental, subsCan lead a claimANone
T46.7X1SPoisoning by peripheral vasodilators, accidental (unintentional), sequelaCMS: Poisoning by peripheral vasodilators, accidental, sequelaCan lead a claimANone
T46.7X2 Poisoning by peripheral vasodilators, intentional self-harm
T46.7X2APoisoning by peripheral vasodilators, intentional self-harm, initial encounterCMS: Poisoning by peripheral vasodilators, self-harm, initCan lead a claimANone
T46.7X2DPoisoning by peripheral vasodilators, intentional self-harm, subsequent encounterCMS: Poisoning by peripheral vasodilators, self-harm, subsCan lead a claimANone
T46.7X2SPoisoning by peripheral vasodilators, intentional self-harm, sequelaCMS: Poisoning by peripheral vasodilators, self-harm, sequelaCan lead a claimANone
T46.7X3 Poisoning by peripheral vasodilators, assault
T46.7X3APoisoning by peripheral vasodilators, assault, initial encounterCMS: Poisoning by peripheral vasodilators, assault, init encntrCan lead a claimANone
T46.7X3DPoisoning by peripheral vasodilators, assault, subsequent encounterCMS: Poisoning by peripheral vasodilators, assault, subs encntrCan lead a claimANone
T46.7X3SPoisoning by peripheral vasodilators, assault, sequelaCan lead a claimANone
T46.7X4 Poisoning by peripheral vasodilators, undetermined
T46.7X4APoisoning by peripheral vasodilators, undetermined, initial encounterCMS: Poisoning by peripheral vasodilators, undetermined, initCan lead a claimANone
T46.7X4DPoisoning by peripheral vasodilators, undetermined, subsequent encounterCMS: Poisoning by peripheral vasodilators, undetermined, subsCan lead a claimANone
T46.7X4SPoisoning by peripheral vasodilators, undetermined, sequelaCan lead a claimANone
T46.7X5 Adverse effect of peripheral vasodilators
T46.7X5AAdverse effect of peripheral vasodilators, initial encounterCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.7X5DAdverse effect of peripheral vasodilators, subsequent encounterCMS: Adverse effect of peripheral vasodilators, subs encntrCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.7X5SAdverse effect of peripheral vasodilators, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.7X6 Underdosing of peripheral vasodilators
T46.7X6AUnderdosing of peripheral vasodilators, initial encounterCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.7X6DUnderdosing of peripheral vasodilators, subsequent encounterCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.7X6SUnderdosing of peripheral vasodilators, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.8 Poisoning by, adverse effect of and underdosing of antivaricose drugs, including sclerosing agents
T46.8X Poisoning by, adverse effect of and underdosing of antivaricose drugs, including sclerosing agents
T46.8X1 Poisoning by antivaricose drugs, including sclerosing agents, accidental (unintentional)
T46.8X1APoisoning by antivaricose drugs, including sclerosing agents, accidental (unintentional), initial encounterCMS: Poisoning by antivaric drugs, inc scler agents, acc, initCan lead a claimANone
T46.8X1DPoisoning by antivaricose drugs, including sclerosing agents, accidental (unintentional), subsequent encounterCMS: Poisoning by antivaric drugs, inc scler agents, acc, subsCan lead a claimANone
T46.8X1SPoisoning by antivaricose drugs, including sclerosing agents, accidental (unintentional), sequelaCMS: Poisn by antivaric drugs, inc scler agents, acc, sequelaCan lead a claimANone
T46.8X2 Poisoning by antivaricose drugs, including sclerosing agents, intentional self-harm
T46.8X2APoisoning by antivaricose drugs, including sclerosing agents, intentional self-harm, initial encounterCMS: Poisn by antivaric drugs, inc scler agents, self-harm, initCan lead a claimANone
T46.8X2DPoisoning by antivaricose drugs, including sclerosing agents, intentional self-harm, subsequent encounterCMS: Poisn by antivaric drugs, inc scler agents, self-harm, subsCan lead a claimANone
T46.8X2SPoisoning by antivaricose drugs, including sclerosing agents, intentional self-harm, sequelaCMS: Poisn by antivaric drugs, inc scler agents, slf-hrm, sequelaCan lead a claimANone
T46.8X3 Poisoning by antivaricose drugs, including sclerosing agents, assault
T46.8X3APoisoning by antivaricose drugs, including sclerosing agents, assault, initial encounterCMS: Poisn by antivaric drugs, inc scler agents, assault, initCan lead a claimANone
T46.8X3DPoisoning by antivaricose drugs, including sclerosing agents, assault, subsequent encounterCMS: Poisn by antivaric drugs, inc scler agents, assault, subsCan lead a claimANone
T46.8X3SPoisoning by antivaricose drugs, including sclerosing agents, assault, sequelaCMS: Poisn by antivaric drugs, inc scler agents, assault, sequelaCan lead a claimANone
T46.8X4 Poisoning by antivaricose drugs, including sclerosing agents, undetermined
T46.8X4APoisoning by antivaricose drugs, including sclerosing agents, undetermined, initial encounterCMS: Poisoning by antivaric drugs, inc scler agents, undet, initCan lead a claimANone
T46.8X4DPoisoning by antivaricose drugs, including sclerosing agents, undetermined, subsequent encounterCMS: Poisoning by antivaric drugs, inc scler agents, undet, subsCan lead a claimANone
T46.8X4SPoisoning by antivaricose drugs, including sclerosing agents, undetermined, sequelaCMS: Poisn by antivaric drugs, inc scler agents, undet, sequelaCan lead a claimANone
T46.8X5 Adverse effect of antivaricose drugs, including sclerosing agents
T46.8X5AAdverse effect of antivaricose drugs, including sclerosing agents, initial encounterCMS: Adverse effect of antivaric drugs, inc scler agents, initCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.8X5DAdverse effect of antivaricose drugs, including sclerosing agents, subsequent encounterCMS: Adverse effect of antivaric drugs, inc scler agents, subsCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.8X5SAdverse effect of antivaricose drugs, including sclerosing agents, sequelaCMS: Adverse effect of antivaric drugs, inc scler agents, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.8X6 Underdosing of antivaricose drugs, including sclerosing agents
T46.8X6AUnderdosing of antivaricose drugs, including sclerosing agents, initial encounterCMS: Undrdose of antivaric drugs, including scler agents, initCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.8X6DUnderdosing of antivaricose drugs, including sclerosing agents, subsequent encounterCMS: Undrdose of antivaric drugs, including scler agents, subsCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.8X6SUnderdosing of antivaricose drugs, including sclerosing agents, sequelaCMS: Undrdose of antivaric drugs, including scler agents, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.9 Poisoning by, adverse effect of and underdosing of other and unspecified agents primarily affecting the cardiovascular system
T46.90 Poisoning by, adverse effect of and underdosing of unspecified agents primarily affecting the cardiovascular system
T46.901 Poisoning by unspecified agents primarily affecting the cardiovascular system, accidental (unintentional)
T46.901APoisoning by unspecified agents primarily affecting the cardiovascular system, accidental (unintentional), initial encounterCMS: Poisoning by unsp agents aff the cardiovasc sys, acc, initCan lead a claimANone
T46.901DPoisoning by unspecified agents primarily affecting the cardiovascular system, accidental (unintentional), subsequent encounterCMS: Poisoning by unsp agents aff the cardiovasc sys, acc, subsCan lead a claimANone
T46.901SPoisoning by unspecified agents primarily affecting the cardiovascular system, accidental (unintentional), sequelaCMS: Poisn by unsp agents aff the cardiovasc sys, acc, sequelaCan lead a claimANone
T46.902 Poisoning by unspecified agents primarily affecting the cardiovascular system, intentional self-harm
T46.902APoisoning by unspecified agents primarily affecting the cardiovascular system, intentional self-harm, initial encounterCMS: Poisn by unsp agents aff the cardiovasc sys, self-harm, initCan lead a claimANone
T46.902DPoisoning by unspecified agents primarily affecting the cardiovascular system, intentional self-harm, subsequent encounterCMS: Poisn by unsp agents aff the cardiovasc sys, self-harm, subsCan lead a claimANone
T46.902SPoisoning by unspecified agents primarily affecting the cardiovascular system, intentional self-harm, sequelaCMS: Poisn by unsp agents aff the cardiovasc sys, slf-hrm, sqlaCan lead a claimANone
T46.903 Poisoning by unspecified agents primarily affecting the cardiovascular system, assault
T46.903APoisoning by unspecified agents primarily affecting the cardiovascular system, assault, initial encounterCMS: Poisn by unsp agents aff the cardiovasc sys, assault, initCan lead a claimANone
T46.903DPoisoning by unspecified agents primarily affecting the cardiovascular system, assault, subsequent encounterCMS: Poisn by unsp agents aff the cardiovasc sys, assault, subsCan lead a claimANone
T46.903SPoisoning by unspecified agents primarily affecting the cardiovascular system, assault, sequelaCMS: Poisn by unsp agents aff the cardiovasc sys, asslt, sequelaCan lead a claimANone
T46.904 Poisoning by unspecified agents primarily affecting the cardiovascular system, undetermined
T46.904APoisoning by unspecified agents primarily affecting the cardiovascular system, undetermined, initial encounterCMS: Poisoning by unsp agents aff the cardiovasc sys, undet, initCan lead a claimANone
T46.904DPoisoning by unspecified agents primarily affecting the cardiovascular system, undetermined, subsequent encounterCMS: Poisoning by unsp agents aff the cardiovasc sys, undet, subsCan lead a claimANone
T46.904SPoisoning by unspecified agents primarily affecting the cardiovascular system, undetermined, sequelaCMS: Poisn by unsp agents aff the cardiovasc sys, undet, sequelaCan lead a claimANone
T46.905 Adverse effect of unspecified agents primarily affecting the cardiovascular system
T46.905AAdverse effect of unspecified agents primarily affecting the cardiovascular system, initial encounterCMS: Adverse effect of unsp agents aff the cardiovasc sys, initCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.905DAdverse effect of unspecified agents primarily affecting the cardiovascular system, subsequent encounterCMS: Adverse effect of unsp agents aff the cardiovasc sys, subsCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.905SAdverse effect of unspecified agents primarily affecting the cardiovascular system, sequelaCMS: Advrs effect of unsp agents aff the cardiovasc sys, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.906 Underdosing of unspecified agents primarily affecting the cardiovascular system
T46.906AUnderdosing of unspecified agents primarily affecting the cardiovascular system, initial encounterCMS: Underdosing of unsp agents aff the cardiovascular sys, initCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.906DUnderdosing of unspecified agents primarily affecting the cardiovascular system, subsequent encounterCMS: Underdosing of unsp agents aff the cardiovascular sys, subsCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.906SUnderdosing of unspecified agents primarily affecting the cardiovascular system, sequelaCMS: Underdosing of unsp agents aff the cardiovasc sys, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.99 Poisoning by, adverse effect of and underdosing of other agents primarily affecting the cardiovascular system
T46.991 Poisoning by other agents primarily affecting the cardiovascular system, accidental (unintentional)
T46.991APoisoning by other agents primarily affecting the cardiovascular system, accidental (unintentional), initial encounterCMS: Poisoning by oth agents aff the cardiovasc sys, acc, initCan lead a claimANone
T46.991DPoisoning by other agents primarily affecting the cardiovascular system, accidental (unintentional), subsequent encounterCMS: Poisoning by oth agents aff the cardiovasc sys, acc, subsCan lead a claimANone
T46.991SPoisoning by other agents primarily affecting the cardiovascular system, accidental (unintentional), sequelaCMS: Poisn by oth agents aff the cardiovasc sys, acc, sequelaCan lead a claimANone
T46.992 Poisoning by other agents primarily affecting the cardiovascular system, intentional self-harm
T46.992APoisoning by other agents primarily affecting the cardiovascular system, intentional self-harm, initial encounterCMS: Poisn by oth agents aff the cardiovasc sys, self-harm, initCan lead a claimANone
T46.992DPoisoning by other agents primarily affecting the cardiovascular system, intentional self-harm, subsequent encounterCMS: Poisn by oth agents aff the cardiovasc sys, self-harm, subsCan lead a claimANone
T46.992SPoisoning by other agents primarily affecting the cardiovascular system, intentional self-harm, sequelaCMS: Poisn by oth agents aff the cardiovasc sys, slf-hrm, sequelaCan lead a claimANone
T46.993 Poisoning by other agents primarily affecting the cardiovascular system, assault
T46.993APoisoning by other agents primarily affecting the cardiovascular system, assault, initial encounterCMS: Poisn by oth agents aff the cardiovasc sys, assault, initCan lead a claimANone
T46.993DPoisoning by other agents primarily affecting the cardiovascular system, assault, subsequent encounterCMS: Poisn by oth agents aff the cardiovasc sys, assault, subsCan lead a claimANone
T46.993SPoisoning by other agents primarily affecting the cardiovascular system, assault, sequelaCMS: Poisn by oth agents aff the cardiovasc sys, assault, sequelaCan lead a claimANone
T46.994 Poisoning by other agents primarily affecting the cardiovascular system, undetermined
T46.994APoisoning by other agents primarily affecting the cardiovascular system, undetermined, initial encounterCMS: Poisoning by oth agents aff the cardiovasc sys, undet, initCan lead a claimANone
T46.994DPoisoning by other agents primarily affecting the cardiovascular system, undetermined, subsequent encounterCMS: Poisoning by oth agents aff the cardiovasc sys, undet, subsCan lead a claimANone
T46.994SPoisoning by other agents primarily affecting the cardiovascular system, undetermined, sequelaCMS: Poisn by oth agents aff the cardiovasc sys, undet, sequelaCan lead a claimANone
T46.995 Adverse effect of other agents primarily affecting the cardiovascular system
T46.995AAdverse effect of other agents primarily affecting the cardiovascular system, initial encounterCMS: Adverse effect of agents aff the cardiovascular sys, initCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.995DAdverse effect of other agents primarily affecting the cardiovascular system, subsequent encounterCMS: Adverse effect of agents aff the cardiovascular sys, subsCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.995SAdverse effect of other agents primarily affecting the cardiovascular system, sequelaCMS: Adverse effect of agents aff the cardiovascular sys, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.996 Underdosing of other agents primarily affecting the cardiovascular system
T46.996AUnderdosing of other agents primarily affecting the cardiovascular system, initial encounterCMS: Underdosing of agents aff the cardiovascular sys, initCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.996DUnderdosing of other agents primarily affecting the cardiovascular system, subsequent encounterCMS: Underdosing of agents aff the cardiovascular sys, subsCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone
T46.996SUnderdosing of other agents primarily affecting the cardiovascular system, sequelaCMS: Underdosing of agents aff the cardiovascular sys, sequelaCannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosisNoneNone

Sources: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01, for the clinical group, comorbidity subgroup, code-first conventions and primary-position flags; CDC NCHS ICD-10-CM FY2027 code descriptions for the family title and code wording. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.

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