ICD-10 · PDGM grouping
T42 Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs
All 162 codes in the T42 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
162
Can lead a claim
108
Cannot lead a claim
54
What CMS assigns to T42
108 of the 162 codes group to MMTA - Other; 54 are assigned no clinical group. None of the 162 is assigned a comorbidity subgroup. 108 of the 162 can lead a claim.
Every code in T42
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| T42.0 Poisoning by, adverse effect of and underdosing of hydantoin derivatives | ||||
| T42.0X Poisoning by, adverse effect of and underdosing of hydantoin derivatives | ||||
| T42.0X1 Poisoning by hydantoin derivatives, accidental (unintentional) | ||||
| T42.0X1A | Poisoning by hydantoin derivatives, accidental (unintentional), initial encounterCMS: Poisoning by hydantoin derivatives, accidental, init | Can lead a claim | A | None |
| T42.0X1D | Poisoning by hydantoin derivatives, accidental (unintentional), subsequent encounterCMS: Poisoning by hydantoin derivatives, accidental, subs | Can lead a claim | A | None |
| T42.0X1S | Poisoning by hydantoin derivatives, accidental (unintentional), sequelaCMS: Poisoning by hydantoin derivatives, accidental, sequela | Can lead a claim | A | None |
| T42.0X2 Poisoning by hydantoin derivatives, intentional self-harm | ||||
| T42.0X2A | Poisoning by hydantoin derivatives, intentional self-harm, initial encounterCMS: Poisoning by hydantoin derivatives, self-harm, init | Can lead a claim | A | None |
| T42.0X2D | Poisoning by hydantoin derivatives, intentional self-harm, subsequent encounterCMS: Poisoning by hydantoin derivatives, self-harm, subs | Can lead a claim | A | None |
| T42.0X2S | Poisoning by hydantoin derivatives, intentional self-harm, sequelaCMS: Poisoning by hydantoin derivatives, self-harm, sequela | Can lead a claim | A | None |
| T42.0X3 Poisoning by hydantoin derivatives, assault | ||||
| T42.0X3A | Poisoning by hydantoin derivatives, assault, initial encounterCMS: Poisoning by hydantoin derivatives, assault, init encntr | Can lead a claim | A | None |
| T42.0X3D | Poisoning by hydantoin derivatives, assault, subsequent encounterCMS: Poisoning by hydantoin derivatives, assault, subs encntr | Can lead a claim | A | None |
| T42.0X3S | Poisoning by hydantoin derivatives, assault, sequela | Can lead a claim | A | None |
| T42.0X4 Poisoning by hydantoin derivatives, undetermined | ||||
| T42.0X4A | Poisoning by hydantoin derivatives, undetermined, initial encounterCMS: Poisoning by hydantoin derivatives, undetermined, init | Can lead a claim | A | None |
| T42.0X4D | Poisoning by hydantoin derivatives, undetermined, subsequent encounterCMS: Poisoning by hydantoin derivatives, undetermined, subs | Can lead a claim | A | None |
| T42.0X4S | Poisoning by hydantoin derivatives, undetermined, sequela | Can lead a claim | A | None |
| T42.0X5 Adverse effect of hydantoin derivatives | ||||
| T42.0X5A | Adverse effect of hydantoin derivatives, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.0X5D | Adverse effect of hydantoin derivatives, subsequent encounterCMS: Adverse effect of hydantoin derivatives, subs encntr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.0X5S | Adverse effect of hydantoin derivatives, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.0X6 Underdosing of hydantoin derivatives | ||||
| T42.0X6A | Underdosing of hydantoin derivatives, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.0X6D | Underdosing of hydantoin derivatives, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.0X6S | Underdosing of hydantoin derivatives, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.1 Poisoning by, adverse effect of and underdosing of iminostilbenes | ||||
| T42.1X Poisoning by, adverse effect of and underdosing of iminostilbenes | ||||
| T42.1X1 Poisoning by iminostilbenes, accidental (unintentional) | ||||
| T42.1X1A | Poisoning by iminostilbenes, accidental (unintentional), initial encounterCMS: Poisoning by iminostilbenes, accidental, init | Can lead a claim | A | None |
| T42.1X1D | Poisoning by iminostilbenes, accidental (unintentional), subsequent encounterCMS: Poisoning by iminostilbenes, accidental, subs | Can lead a claim | A | None |
| T42.1X1S | Poisoning by iminostilbenes, accidental (unintentional), sequelaCMS: Poisoning by iminostilbenes, accidental, sequela | Can lead a claim | A | None |
| T42.1X2 Poisoning by iminostilbenes, intentional self-harm | ||||
| T42.1X2A | Poisoning by iminostilbenes, intentional self-harm, initial encounterCMS: Poisoning by iminostilbenes, intentional self-harm, init | Can lead a claim | A | None |
| T42.1X2D | Poisoning by iminostilbenes, intentional self-harm, subsequent encounterCMS: Poisoning by iminostilbenes, intentional self-harm, subs | Can lead a claim | A | None |
| T42.1X2S | Poisoning by iminostilbenes, intentional self-harm, sequela | Can lead a claim | A | None |
| T42.1X3 Poisoning by iminostilbenes, assault | ||||
| T42.1X3A | Poisoning by iminostilbenes, assault, initial encounter | Can lead a claim | A | None |
| T42.1X3D | Poisoning by iminostilbenes, assault, subsequent encounter | Can lead a claim | A | None |
| T42.1X3S | Poisoning by iminostilbenes, assault, sequela | Can lead a claim | A | None |
| T42.1X4 Poisoning by iminostilbenes, undetermined | ||||
| T42.1X4A | Poisoning by iminostilbenes, undetermined, initial encounter | Can lead a claim | A | None |
| T42.1X4D | Poisoning by iminostilbenes, undetermined, subsequent encounterCMS: Poisoning by iminostilbenes, undetermined, subs encntr | Can lead a claim | A | None |
| T42.1X4S | Poisoning by iminostilbenes, undetermined, sequela | Can lead a claim | A | None |
| T42.1X5 Adverse effect of iminostilbenes | ||||
| T42.1X5A | Adverse effect of iminostilbenes, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.1X5D | Adverse effect of iminostilbenes, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.1X5S | Adverse effect of iminostilbenes, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.1X6 Underdosing of iminostilbenes | ||||
| T42.1X6A | Underdosing of iminostilbenes, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.1X6D | Underdosing of iminostilbenes, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.1X6S | Underdosing of iminostilbenes, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.2 Poisoning by, adverse effect of and underdosing of succinimides and oxazolidinediones | ||||
| T42.2X Poisoning by, adverse effect of and underdosing of succinimides and oxazolidinediones | ||||
| T42.2X1 Poisoning by succinimides and oxazolidinediones, accidental (unintentional) | ||||
| T42.2X1A | Poisoning by succinimides and oxazolidinediones, accidental (unintentional), initial encounterCMS: Poisoning by succinimides and oxazolidinediones, acc, init | Can lead a claim | A | None |
| T42.2X1D | Poisoning by succinimides and oxazolidinediones, accidental (unintentional), subsequent encounterCMS: Poisoning by succinimides and oxazolidinediones, acc, subs | Can lead a claim | A | None |
| T42.2X1S | Poisoning by succinimides and oxazolidinediones, accidental (unintentional), sequelaCMS: Poisn by succinimides and oxazolidinediones, acc, sequela | Can lead a claim | A | None |
| T42.2X2 Poisoning by succinimides and oxazolidinediones, intentional self-harm | ||||
| T42.2X2A | Poisoning by succinimides and oxazolidinediones, intentional self-harm, initial encounterCMS: Poisn by succinimides and oxazolidinediones, self-harm, init | Can lead a claim | A | None |
| T42.2X2D | Poisoning by succinimides and oxazolidinediones, intentional self-harm, subsequent encounterCMS: Poisn by succinimides and oxazolidinediones, self-harm, subs | Can lead a claim | A | None |
| T42.2X2S | Poisoning by succinimides and oxazolidinediones, intentional self-harm, sequelaCMS: Poisn by succinimides and oxazolidinediones, slf-hrm, sqla | Can lead a claim | A | None |
| T42.2X3 Poisoning by succinimides and oxazolidinediones, assault | ||||
| T42.2X3A | Poisoning by succinimides and oxazolidinediones, assault, initial encounterCMS: Poisn by succinimides and oxazolidinediones, assault, init | Can lead a claim | A | None |
| T42.2X3D | Poisoning by succinimides and oxazolidinediones, assault, subsequent encounterCMS: Poisn by succinimides and oxazolidinediones, assault, subs | Can lead a claim | A | None |
| T42.2X3S | Poisoning by succinimides and oxazolidinediones, assault, sequelaCMS: Poisn by succinimides and oxazolidinediones, asslt, sequela | Can lead a claim | A | None |
| T42.2X4 Poisoning by succinimides and oxazolidinediones, undetermined | ||||
| T42.2X4A | Poisoning by succinimides and oxazolidinediones, undetermined, initial encounterCMS: Poisoning by succinimides and oxazolidinediones, undet, init | Can lead a claim | A | None |
| T42.2X4D | Poisoning by succinimides and oxazolidinediones, undetermined, subsequent encounterCMS: Poisoning by succinimides and oxazolidinediones, undet, subs | Can lead a claim | A | None |
| T42.2X4S | Poisoning by succinimides and oxazolidinediones, undetermined, sequelaCMS: Poisn by succinimides and oxazolidinediones, undet, sequela | Can lead a claim | A | None |
| T42.2X5 Adverse effect of succinimides and oxazolidinediones | ||||
| T42.2X5A | Adverse effect of succinimides and oxazolidinediones, initial encounterCMS: Adverse effect of succinimides and oxazolidinediones, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.2X5D | Adverse effect of succinimides and oxazolidinediones, subsequent encounterCMS: Adverse effect of succinimides and oxazolidinediones, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.2X5S | Adverse effect of succinimides and oxazolidinediones, sequelaCMS: Advrs effect of succinimides and oxazolidinediones, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.2X6 Underdosing of succinimides and oxazolidinediones | ||||
| T42.2X6A | Underdosing of succinimides and oxazolidinediones, initial encounterCMS: Underdosing of succinimides and oxazolidinediones, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.2X6D | Underdosing of succinimides and oxazolidinediones, subsequent encounterCMS: Underdosing of succinimides and oxazolidinediones, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.2X6S | Underdosing of succinimides and oxazolidinediones, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.3 Poisoning by, adverse effect of and underdosing of barbiturates | ||||
| T42.3X Poisoning by, adverse effect of and underdosing of barbiturates | ||||
| T42.3X1 Poisoning by barbiturates, accidental (unintentional) | ||||
| T42.3X1A | Poisoning by barbiturates, accidental (unintentional), initial encounterCMS: Poisoning by barbiturates, accidental (unintentional), init | Can lead a claim | A | None |
| T42.3X1D | Poisoning by barbiturates, accidental (unintentional), subsequent encounterCMS: Poisoning by barbiturates, accidental (unintentional), subs | Can lead a claim | A | None |
| T42.3X1S | Poisoning by barbiturates, accidental (unintentional), sequelaCMS: Poisoning by barbiturates, accidental, sequela | Can lead a claim | A | None |
| T42.3X2 Poisoning by barbiturates, intentional self-harm | ||||
| T42.3X2A | Poisoning by barbiturates, intentional self-harm, initial encounterCMS: Poisoning by barbiturates, intentional self-harm, init | Can lead a claim | A | None |
| T42.3X2D | Poisoning by barbiturates, intentional self-harm, subsequent encounterCMS: Poisoning by barbiturates, intentional self-harm, subs | Can lead a claim | A | None |
| T42.3X2S | Poisoning by barbiturates, intentional self-harm, sequela | Can lead a claim | A | None |
| T42.3X3 Poisoning by barbiturates, assault | ||||
| T42.3X3A | Poisoning by barbiturates, assault, initial encounter | Can lead a claim | A | None |
| T42.3X3D | Poisoning by barbiturates, assault, subsequent encounter | Can lead a claim | A | None |
| T42.3X3S | Poisoning by barbiturates, assault, sequela | Can lead a claim | A | None |
| T42.3X4 Poisoning by barbiturates, undetermined | ||||
| T42.3X4A | Poisoning by barbiturates, undetermined, initial encounter | Can lead a claim | A | None |
| T42.3X4D | Poisoning by barbiturates, undetermined, subsequent encounterCMS: Poisoning by barbiturates, undetermined, subs encntr | Can lead a claim | A | None |
| T42.3X4S | Poisoning by barbiturates, undetermined, sequela | Can lead a claim | A | None |
| T42.3X5 Adverse effect of barbiturates | ||||
| T42.3X5A | Adverse effect of barbiturates, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.3X5D | Adverse effect of barbiturates, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.3X5S | Adverse effect of barbiturates, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.3X6 Underdosing of barbiturates | ||||
| T42.3X6A | Underdosing of barbiturates, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.3X6D | Underdosing of barbiturates, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.3X6S | Underdosing of barbiturates, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.4 Poisoning by, adverse effect of and underdosing of benzodiazepines | ||||
| T42.4X Poisoning by, adverse effect of and underdosing of benzodiazepines | ||||
| T42.4X1 Poisoning by benzodiazepines, accidental (unintentional) | ||||
| T42.4X1A | Poisoning by benzodiazepines, accidental (unintentional), initial encounterCMS: Poisoning by benzodiazepines, accidental, init | Can lead a claim | A | None |
| T42.4X1D | Poisoning by benzodiazepines, accidental (unintentional), subsequent encounterCMS: Poisoning by benzodiazepines, accidental, subs | Can lead a claim | A | None |
| T42.4X1S | Poisoning by benzodiazepines, accidental (unintentional), sequelaCMS: Poisoning by benzodiazepines, accidental, sequela | Can lead a claim | A | None |
| T42.4X2 Poisoning by benzodiazepines, intentional self-harm | ||||
| T42.4X2A | Poisoning by benzodiazepines, intentional self-harm, initial encounterCMS: Poisoning by benzodiazepines, intentional self-harm, init | Can lead a claim | A | None |
| T42.4X2D | Poisoning by benzodiazepines, intentional self-harm, subsequent encounterCMS: Poisoning by benzodiazepines, intentional self-harm, subs | Can lead a claim | A | None |
| T42.4X2S | Poisoning by benzodiazepines, intentional self-harm, sequela | Can lead a claim | A | None |
| T42.4X3 Poisoning by benzodiazepines, assault | ||||
| T42.4X3A | Poisoning by benzodiazepines, assault, initial encounter | Can lead a claim | A | None |
| T42.4X3D | Poisoning by benzodiazepines, assault, subsequent encounter | Can lead a claim | A | None |
| T42.4X3S | Poisoning by benzodiazepines, assault, sequela | Can lead a claim | A | None |
| T42.4X4 Poisoning by benzodiazepines, undetermined | ||||
| T42.4X4A | Poisoning by benzodiazepines, undetermined, initial encounterCMS: Poisoning by benzodiazepines, undetermined, init encntr | Can lead a claim | A | None |
| T42.4X4D | Poisoning by benzodiazepines, undetermined, subsequent encounterCMS: Poisoning by benzodiazepines, undetermined, subs encntr | Can lead a claim | A | None |
| T42.4X4S | Poisoning by benzodiazepines, undetermined, sequela | Can lead a claim | A | None |
| T42.4X5 Adverse effect of benzodiazepines | ||||
| T42.4X5A | Adverse effect of benzodiazepines, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.4X5D | Adverse effect of benzodiazepines, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.4X5S | Adverse effect of benzodiazepines, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.4X6 Underdosing of benzodiazepines | ||||
| T42.4X6A | Underdosing of benzodiazepines, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.4X6D | Underdosing of benzodiazepines, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.4X6S | Underdosing of benzodiazepines, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.5 Poisoning by, adverse effect of and underdosing of mixed antiepileptics | ||||
| T42.5X Poisoning by, adverse effect of and underdosing of antiepileptics | ||||
| T42.5X1 Poisoning by mixed antiepileptics, accidental (unintentional) | ||||
| T42.5X1A | Poisoning by mixed antiepileptics, accidental (unintentional), initial encounterCMS: Poisoning by mixed antiepileptics, accidental, init | Can lead a claim | A | None |
| T42.5X1D | Poisoning by mixed antiepileptics, accidental (unintentional), subsequent encounterCMS: Poisoning by mixed antiepileptics, accidental, subs | Can lead a claim | A | None |
| T42.5X1S | Poisoning by mixed antiepileptics, accidental (unintentional), sequelaCMS: Poisoning by mixed antiepileptics, accidental, sequela | Can lead a claim | A | None |
| T42.5X2 Poisoning by mixed antiepileptics, intentional self-harm | ||||
| T42.5X2A | Poisoning by mixed antiepileptics, intentional self-harm, initial encounterCMS: Poisoning by mixed antiepileptics, self-harm, init | Can lead a claim | A | None |
| T42.5X2D | Poisoning by mixed antiepileptics, intentional self-harm, subsequent encounterCMS: Poisoning by mixed antiepileptics, self-harm, subs | Can lead a claim | A | None |
| T42.5X2S | Poisoning by mixed antiepileptics, intentional self-harm, sequelaCMS: Poisoning by mixed antiepileptics, self-harm, sequela | Can lead a claim | A | None |
| T42.5X3 Poisoning by mixed antiepileptics, assault | ||||
| T42.5X3A | Poisoning by mixed antiepileptics, assault, initial encounterCMS: Poisoning by mixed antiepileptics, assault, init encntr | Can lead a claim | A | None |
| T42.5X3D | Poisoning by mixed antiepileptics, assault, subsequent encounterCMS: Poisoning by mixed antiepileptics, assault, subs encntr | Can lead a claim | A | None |
| T42.5X3S | Poisoning by mixed antiepileptics, assault, sequela | Can lead a claim | A | None |
| T42.5X4 Poisoning by mixed antiepileptics, undetermined | ||||
| T42.5X4A | Poisoning by mixed antiepileptics, undetermined, initial encounterCMS: Poisoning by mixed antiepileptics, undetermined, init encntr | Can lead a claim | A | None |
| T42.5X4D | Poisoning by mixed antiepileptics, undetermined, subsequent encounterCMS: Poisoning by mixed antiepileptics, undetermined, subs encntr | Can lead a claim | A | None |
| T42.5X4S | Poisoning by mixed antiepileptics, undetermined, sequela | Can lead a claim | A | None |
| T42.5X5 Adverse effect of mixed antiepileptics | ||||
| T42.5X5A | Adverse effect of mixed antiepileptics, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.5X5D | Adverse effect of mixed antiepileptics, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.5X5S | Adverse effect of mixed antiepileptics, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.5X6 Underdosing of mixed antiepileptics | ||||
| T42.5X6A | Underdosing of mixed antiepileptics, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.5X6D | Underdosing of mixed antiepileptics, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.5X6S | Underdosing of mixed antiepileptics, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.6 Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs | ||||
| T42.6X Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs | ||||
| T42.6X1 Poisoning by other antiepileptic and sedative-hypnotic drugs, accidental (unintentional) | ||||
| T42.6X1A | Poisoning by other antiepileptic and sedative-hypnotic drugs, accidental (unintentional), initial encounterCMS: Poisoning by oth antieplptc and sed-hypntc drugs, acc, init | Can lead a claim | A | None |
| T42.6X1D | Poisoning by other antiepileptic and sedative-hypnotic drugs, accidental (unintentional), subsequent encounterCMS: Poisoning by oth antieplptc and sed-hypntc drugs, acc, subs | Can lead a claim | A | None |
| T42.6X1S | Poisoning by other antiepileptic and sedative-hypnotic drugs, accidental (unintentional), sequelaCMS: Poisn by oth antieplptc and sed-hypntc drugs, acc, sequela | Can lead a claim | A | None |
| T42.6X2 Poisoning by other antiepileptic and sedative-hypnotic drugs, intentional self-harm | ||||
| T42.6X2A | Poisoning by other antiepileptic and sedative-hypnotic drugs, intentional self-harm, initial encounterCMS: Poisn by oth antieplptc and sed-hypntc drugs, slf-hrm, init | Can lead a claim | A | None |
| T42.6X2D | Poisoning by other antiepileptic and sedative-hypnotic drugs, intentional self-harm, subsequent encounterCMS: Poisn by oth antieplptc and sed-hypntc drugs, slf-hrm, subs | Can lead a claim | A | None |
| T42.6X2S | Poisoning by other antiepileptic and sedative-hypnotic drugs, intentional self-harm, sequelaCMS: Poisn by oth antieplptc and sed-hypntc drugs, slf-hrm, sqla | Can lead a claim | A | None |
| T42.6X3 Poisoning by other antiepileptic and sedative-hypnotic drugs, assault | ||||
| T42.6X3A | Poisoning by other antiepileptic and sedative-hypnotic drugs, assault, initial encounterCMS: Poisn by oth antieplptc and sed-hypntc drugs, assault, init | Can lead a claim | A | None |
| T42.6X3D | Poisoning by other antiepileptic and sedative-hypnotic drugs, assault, subsequent encounterCMS: Poisn by oth antieplptc and sed-hypntc drugs, assault, subs | Can lead a claim | A | None |
| T42.6X3S | Poisoning by other antiepileptic and sedative-hypnotic drugs, assault, sequelaCMS: Poisn by oth antieplptc and sed-hypntc drugs, asslt, sequela | Can lead a claim | A | None |
| T42.6X4 Poisoning by other antiepileptic and sedative-hypnotic drugs, undetermined | ||||
| T42.6X4A | Poisoning by other antiepileptic and sedative-hypnotic drugs, undetermined, initial encounterCMS: Poisn by oth antieplptc and sed-hypntc drugs, undet, init | Can lead a claim | A | None |
| T42.6X4D | Poisoning by other antiepileptic and sedative-hypnotic drugs, undetermined, subsequent encounterCMS: Poisn by oth antieplptc and sed-hypntc drugs, undet, subs | Can lead a claim | A | None |
| T42.6X4S | Poisoning by other antiepileptic and sedative-hypnotic drugs, undetermined, sequelaCMS: Poisn by oth antieplptc and sed-hypntc drugs, undet, sequela | Can lead a claim | A | None |
| T42.6X5 Adverse effect of other antiepileptic and sedative-hypnotic drugs | ||||
| T42.6X5A | Adverse effect of other antiepileptic and sedative-hypnotic drugs, initial encounterCMS: Adverse effect of antiepileptic and sed-hypntc drugs, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.6X5D | Adverse effect of other antiepileptic and sedative-hypnotic drugs, subsequent encounterCMS: Adverse effect of antiepileptic and sed-hypntc drugs, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.6X5S | Adverse effect of other antiepileptic and sedative-hypnotic drugs, sequelaCMS: Adverse effect of antieplptc and sed-hypntc drugs, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.6X6 Underdosing of other antiepileptic and sedative-hypnotic drugs | ||||
| T42.6X6A | Underdosing of other antiepileptic and sedative-hypnotic drugs, initial encounterCMS: Underdosing of antiepileptic and sed-hypntc drugs, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.6X6D | Underdosing of other antiepileptic and sedative-hypnotic drugs, subsequent encounterCMS: Underdosing of antiepileptic and sed-hypntc drugs, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.6X6S | Underdosing of other antiepileptic and sedative-hypnotic drugs, sequelaCMS: Underdosing of antiepileptic and sed-hypntc drugs, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.7 Poisoning by, adverse effect of and underdosing of unspecified antiepileptic and sedative-hypnotic drugs | ||||
| T42.71 Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, accidental (unintentional) | ||||
| T42.71XA | Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, accidental (unintentional), initial encounterCMS: Poisn by unsp antieplptc and sed-hypntc drugs, acc, init | Can lead a claim | A | None |
| T42.71XD | Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, accidental (unintentional), subsequent encounterCMS: Poisn by unsp antieplptc and sed-hypntc drugs, acc, subs | Can lead a claim | A | None |
| T42.71XS | Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, accidental (unintentional), sequelaCMS: Poisn by unsp antieplptc and sed-hypntc drugs, acc, sequela | Can lead a claim | A | None |
| T42.72 Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, intentional self-harm | ||||
| T42.72XA | Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, intentional self-harm, initial encounterCMS: Poisn by unsp antieplptc and sed-hypntc drugs, slf-hrm, init | Can lead a claim | A | None |
| T42.72XD | Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, intentional self-harm, subsequent encounterCMS: Poisn by unsp antieplptc and sed-hypntc drugs, slf-hrm, subs | Can lead a claim | A | None |
| T42.72XS | Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, intentional self-harm, sequelaCMS: Poisn by unsp antieplptc and sed-hypntc drugs, slf-hrm, sqla | Can lead a claim | A | None |
| T42.73 Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, assault | ||||
| T42.73XA | Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, assault, initial encounterCMS: Poisn by unsp antieplptc and sed-hypntc drugs, assault, init | Can lead a claim | A | None |
| T42.73XD | Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, assault, subsequent encounterCMS: Poisn by unsp antieplptc and sed-hypntc drugs, assault, subs | Can lead a claim | A | None |
| T42.73XS | Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, assault, sequelaCMS: Poisn by unsp antieplptc and sed-hypntc drugs, asslt, sqla | Can lead a claim | A | None |
| T42.74 Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, undetermined | ||||
| T42.74XA | Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, undetermined, initial encounterCMS: Poisn by unsp antieplptc and sed-hypntc drugs, undet, init | Can lead a claim | A | None |
| T42.74XD | Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, undetermined, subsequent encounterCMS: Poisn by unsp antieplptc and sed-hypntc drugs, undet, subs | Can lead a claim | A | None |
| T42.74XS | Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, undetermined, sequelaCMS: Poisn by unsp antieplptc and sed-hypntc drugs, undet, sqla | Can lead a claim | A | None |
| T42.75 Adverse effect of unspecified antiepileptic and sedative-hypnotic drugs | ||||
| T42.75XA | Adverse effect of unspecified antiepileptic and sedative-hypnotic drugs, initial encounterCMS: Adverse effect of unsp antieplptc and sed-hypntc drugs, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.75XD | Adverse effect of unspecified antiepileptic and sedative-hypnotic drugs, subsequent encounterCMS: Adverse effect of unsp antieplptc and sed-hypntc drugs, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.75XS | Adverse effect of unspecified antiepileptic and sedative-hypnotic drugs, sequelaCMS: Advrs effect of unsp antieplptc and sed-hypntc drugs, sqla | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.76 Underdosing of unspecified antiepileptic and sedative-hypnotic drugs | ||||
| T42.76XA | Underdosing of unspecified antiepileptic and sedative-hypnotic drugs, initial encounterCMS: Underdosing of unsp antiepileptic and sed-hypntc drugs, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.76XD | Underdosing of unspecified antiepileptic and sedative-hypnotic drugs, subsequent encounterCMS: Underdosing of unsp antiepileptic and sed-hypntc drugs, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.76XS | Underdosing of unspecified antiepileptic and sedative-hypnotic drugs, sequelaCMS: Underdosing of unsp antieplptc and sed-hypntc drugs, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.8 Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants | ||||
| T42.8X Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressants | ||||
| T42.8X1 Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, accidental (unintentional) | ||||
| T42.8X1A | Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, accidental (unintentional), initial encounterCMS: Poisn by antiparkns drug/centr musc-tone depr, acc, init | Can lead a claim | A | None |
| T42.8X1D | Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, accidental (unintentional), subsequent encounterCMS: Poisn by antiparkns drug/centr musc-tone depr, acc, subs | Can lead a claim | A | None |
| T42.8X1S | Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, accidental (unintentional), sequelaCMS: Poisn by antiparkns drug/centr musc-tone depr, acc, sequela | Can lead a claim | A | None |
| T42.8X2 Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, intentional self-harm | ||||
| T42.8X2A | Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, intentional self-harm, initial encounterCMS: Poisn by antiparkns drug/centr musc-tone depr, slf-hrm, init | Can lead a claim | A | None |
| T42.8X2D | Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, intentional self-harm, subsequent encounterCMS: Poisn by antiparkns drug/centr musc-tone depr, slf-hrm, subs | Can lead a claim | A | None |
| T42.8X2S | Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, intentional self-harm, sequelaCMS: Poisn by antiparkns drug/centr musc-tone depr, slf-hrm, sqla | Can lead a claim | A | None |
| T42.8X3 Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, assault | ||||
| T42.8X3A | Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, assault, initial encounterCMS: Poisn by antiparkns drug/centr musc-tone depr, assault, init | Can lead a claim | A | None |
| T42.8X3D | Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, assault, subsequent encounterCMS: Poisn by antiparkns drug/centr musc-tone depr, assault, subs | Can lead a claim | A | None |
| T42.8X3S | Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, assault, sequelaCMS: Poisn by antiparkns drug/centr musc-tone depr, asslt, sqla | Can lead a claim | A | None |
| T42.8X4 Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, undetermined | ||||
| T42.8X4A | Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, undetermined, initial encounterCMS: Poisn by antiparkns drug/centr musc-tone depr, undet, init | Can lead a claim | A | None |
| T42.8X4D | Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, undetermined, subsequent encounterCMS: Poisn by antiparkns drug/centr musc-tone depr, undet, subs | Can lead a claim | A | None |
| T42.8X4S | Poisoning by antiparkinsonism drugs and other central muscle-tone depressants, undetermined, sequelaCMS: Poisn by antiparkns drug/centr musc-tone depr, undet, sqla | Can lead a claim | A | None |
| T42.8X5 Adverse effect of antiparkinsonism drugs and other central muscle-tone depressants | ||||
| T42.8X5A | Adverse effect of antiparkinsonism drugs and other central muscle-tone depressants, initial encounterCMS: Adverse effect of antiparkns drug/centr musc-tone depr, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.8X5D | Adverse effect of antiparkinsonism drugs and other central muscle-tone depressants, subsequent encounterCMS: Adverse effect of antiparkns drug/centr musc-tone depr, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.8X5S | Adverse effect of antiparkinsonism drugs and other central muscle-tone depressants, sequelaCMS: Advrs effect of antiparkns drug/centr musc-tone depr, sqla | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.8X6 Underdosing of antiparkinsonism drugs and other central muscle-tone depressants | ||||
| T42.8X6A | Underdosing of antiparkinsonism drugs and other central muscle-tone depressants, initial encounterCMS: Underdosing of antiparkns drug/centr muscle-tone depr, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.8X6D | Underdosing of antiparkinsonism drugs and other central muscle-tone depressants, subsequent encounterCMS: Underdosing of antiparkns drug/centr muscle-tone depr, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T42.8X6S | Underdosing of antiparkinsonism drugs and other central muscle-tone depressants, sequelaCMS: Underdosing of antiparkns drug/centr musc-tone depr, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
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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