ICD-10 · PDGM grouping
T36 Poisoning by, adverse effect of and underdosing of systemic antibiotics
All 198 codes in the T36 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
131
Cannot lead a claim
67
What CMS assigns to T36
131 of the 198 codes group to MMTA - Other; 67 are assigned no clinical group. None of the 198 is assigned a comorbidity subgroup. 131 of the 198 can lead a claim.
Every code in T36
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 |
|---|---|---|---|---|
| T36.0 Poisoning by, adverse effect of and underdosing of penicillins | ||||
| T36.0X Poisoning by, adverse effect of and underdosing of penicillins | ||||
| T36.0X1 Poisoning by penicillins, accidental (unintentional) | ||||
| T36.0X1A | Poisoning by penicillins, accidental (unintentional), initial encounterCMS: Poisoning by penicillins, accidental (unintentional), init | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| T36.0X1D | Poisoning by penicillins, accidental (unintentional), subsequent encounterCMS: Poisoning by penicillins, accidental (unintentional), subs | Can lead a claim | A | None |
| T36.0X1S | Poisoning by penicillins, accidental (unintentional), sequelaCMS: Poisoning by penicillins, accidental, sequela | Can lead a claim | A | None |
| T36.0X2 Poisoning by penicillins, intentional self-harm | ||||
| T36.0X2A | Poisoning by penicillins, intentional self-harm, initial encounterCMS: Poisoning by penicillins, intentional self-harm, init encntr | Can lead a claim | A | None |
| T36.0X2D | Poisoning by penicillins, intentional self-harm, subsequent encounterCMS: Poisoning by penicillins, intentional self-harm, subs encntr | Can lead a claim | A | None |
| T36.0X2S | Poisoning by penicillins, intentional self-harm, sequela | Can lead a claim | A | None |
| T36.0X3 Poisoning by penicillins, assault | ||||
| T36.0X3A | Poisoning by penicillins, assault, initial encounter | Can lead a claim | A | None |
| T36.0X3D | Poisoning by penicillins, assault, subsequent encounter | Can lead a claim | A | None |
| T36.0X3S | Poisoning by penicillins, assault, sequela | Can lead a claim | A | None |
| T36.0X4 Poisoning by penicillins, undetermined | ||||
| T36.0X4A | Poisoning by penicillins, undetermined, initial encounter | Can lead a claim | A | None |
| T36.0X4D | Poisoning by penicillins, undetermined, subsequent encounter | Can lead a claim | A | None |
| T36.0X4S | Poisoning by penicillins, undetermined, sequela | Can lead a claim | A | None |
| T36.0X5 Adverse effect of penicillins | ||||
| T36.0X5A | Adverse effect of penicillins, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.0X5D | Adverse effect of penicillins, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.0X5S | Adverse effect of penicillins, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.0X6 Underdosing of penicillins | ||||
| T36.0X6A | Underdosing of penicillins, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.0X6D | Underdosing of penicillins, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.0X6S | Underdosing of penicillins, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.1 Poisoning by, adverse effect of and underdosing of cephalosporins and other beta-lactam antibiotics | ||||
| T36.1X Poisoning by, adverse effect of and underdosing of cephalosporins and other beta-lactam antibiotics | ||||
| T36.1X1 Poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional) | ||||
| T36.1X1A | Poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional), initial encounterCMS: Poisoning by cephalospor/oth beta-lactm antibiot, acc, init | Can lead a claim | A | None |
| T36.1X1D | Poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional), subsequent encounterCMS: Poisoning by cephalospor/oth beta-lactm antibiot, acc, subs | Can lead a claim | A | None |
| T36.1X1S | Poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional), sequelaCMS: Poisn by cephalospor/oth beta-lactm antibiot, acc, sequela | Can lead a claim | A | None |
| T36.1X2 Poisoning by cephalosporins and other beta-lactam antibiotics, intentional self-harm | ||||
| T36.1X2A | Poisoning by cephalosporins and other beta-lactam antibiotics, intentional self-harm, initial encounterCMS: Poisn by cephalospor/oth beta-lactm antibiot, slf-hrm, init | Can lead a claim | A | None |
| T36.1X2D | Poisoning by cephalosporins and other beta-lactam antibiotics, intentional self-harm, subsequent encounterCMS: Poisn by cephalospor/oth beta-lactm antibiot, slf-hrm, subs | Can lead a claim | A | None |
| T36.1X2S | Poisoning by cephalosporins and other beta-lactam antibiotics, intentional self-harm, sequelaCMS: Poisn by cephalospor/oth beta-lactm antibiot, slf-hrm, sqla | Can lead a claim | A | None |
| T36.1X3 Poisoning by cephalosporins and other beta-lactam antibiotics, assault | ||||
| T36.1X3A | Poisoning by cephalosporins and other beta-lactam antibiotics, assault, initial encounterCMS: Poisn by cephalospor/oth beta-lactm antibiot, assault, init | Can lead a claim | A | None |
| T36.1X3D | Poisoning by cephalosporins and other beta-lactam antibiotics, assault, subsequent encounterCMS: Poisn by cephalospor/oth beta-lactm antibiot, assault, subs | Can lead a claim | A | None |
| T36.1X3S | Poisoning by cephalosporins and other beta-lactam antibiotics, assault, sequelaCMS: Poisn by cephalospor/oth beta-lactm antibiot, asslt, sequela | Can lead a claim | A | None |
| T36.1X4 Poisoning by cephalosporins and other beta-lactam antibiotics, undetermined | ||||
| T36.1X4A | Poisoning by cephalosporins and other beta-lactam antibiotics, undetermined, initial encounterCMS: Poisn by cephalospor/oth beta-lactm antibiot, undet, init | Can lead a claim | A | None |
| T36.1X4D | Poisoning by cephalosporins and other beta-lactam antibiotics, undetermined, subsequent encounterCMS: Poisn by cephalospor/oth beta-lactm antibiot, undet, subs | Can lead a claim | A | None |
| T36.1X4S | Poisoning by cephalosporins and other beta-lactam antibiotics, undetermined, sequelaCMS: Poisn by cephalospor/oth beta-lactm antibiot, undet, sequela | Can lead a claim | A | None |
| T36.1X5 Adverse effect of cephalosporins and other beta-lactam antibiotics | ||||
| T36.1X5A | Adverse effect of cephalosporins and other beta-lactam antibiotics, initial encounterCMS: Adverse effect of cephalospor/oth beta-lactm antibiot, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.1X5D | Adverse effect of cephalosporins and other beta-lactam antibiotics, subsequent encounterCMS: Adverse effect of cephalospor/oth beta-lactm antibiot, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.1X5S | Adverse effect of cephalosporins and other beta-lactam antibiotics, sequelaCMS: Advrs effect of cephalospor/oth beta-lactm antibiot, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.1X6 Underdosing of cephalosporins and other beta-lactam antibiotics | ||||
| T36.1X6A | Underdosing of cephalosporins and other beta-lactam antibiotics, initial encounterCMS: Underdosing of cephalospor/oth beta-lactm antibiotics, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.1X6D | Underdosing of cephalosporins and other beta-lactam antibiotics, subsequent encounterCMS: Underdosing of cephalospor/oth beta-lactm antibiotics, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.1X6S | Underdosing of cephalosporins and other beta-lactam antibiotics, sequelaCMS: Underdosing of cephalospor/oth beta-lactm antibiot, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.2 Poisoning by, adverse effect of and underdosing of chloramphenicol group | ||||
| T36.2X Poisoning by, adverse effect of and underdosing of chloramphenicol group | ||||
| T36.2X1 Poisoning by chloramphenicol group, accidental (unintentional) | ||||
| T36.2X1A | Poisoning by chloramphenicol group, accidental (unintentional), initial encounterCMS: Poisoning by chloramphenicol group, accidental, init | Can lead a claim | A | None |
| T36.2X1D | Poisoning by chloramphenicol group, accidental (unintentional), subsequent encounterCMS: Poisoning by chloramphenicol group, accidental, subs | Can lead a claim | A | None |
| T36.2X1S | Poisoning by chloramphenicol group, accidental (unintentional), sequelaCMS: Poisoning by chloramphenicol group, accidental, sequela | Can lead a claim | A | None |
| T36.2X2 Poisoning by chloramphenicol group, intentional self-harm | ||||
| T36.2X2A | Poisoning by chloramphenicol group, intentional self-harm, initial encounterCMS: Poisoning by chloramphenicol group, self-harm, init | Can lead a claim | A | None |
| T36.2X2D | Poisoning by chloramphenicol group, intentional self-harm, subsequent encounterCMS: Poisoning by chloramphenicol group, self-harm, subs | Can lead a claim | A | None |
| T36.2X2S | Poisoning by chloramphenicol group, intentional self-harm, sequelaCMS: Poisoning by chloramphenicol group, self-harm, sequela | Can lead a claim | A | None |
| T36.2X3 Poisoning by chloramphenicol group, assault | ||||
| T36.2X3A | Poisoning by chloramphenicol group, assault, initial encounterCMS: Poisoning by chloramphenicol group, assault, init encntr | Can lead a claim | A | None |
| T36.2X3D | Poisoning by chloramphenicol group, assault, subsequent encounterCMS: Poisoning by chloramphenicol group, assault, subs encntr | Can lead a claim | A | None |
| T36.2X3S | Poisoning by chloramphenicol group, assault, sequela | Can lead a claim | A | None |
| T36.2X4 Poisoning by chloramphenicol group, undetermined | ||||
| T36.2X4A | Poisoning by chloramphenicol group, undetermined, initial encounterCMS: Poisoning by chloramphenicol group, undetermined, init | Can lead a claim | A | None |
| T36.2X4D | Poisoning by chloramphenicol group, undetermined, subsequent encounterCMS: Poisoning by chloramphenicol group, undetermined, subs | Can lead a claim | A | None |
| T36.2X4S | Poisoning by chloramphenicol group, undetermined, sequela | Can lead a claim | A | None |
| T36.2X5 Adverse effect of chloramphenicol group | ||||
| T36.2X5A | Adverse effect of chloramphenicol group, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.2X5D | Adverse effect of chloramphenicol group, subsequent encounterCMS: Adverse effect of chloramphenicol group, subs encntr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.2X5S | Adverse effect of chloramphenicol group, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.2X6 Underdosing of chloramphenicol group | ||||
| T36.2X6A | Underdosing of chloramphenicol group, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.2X6D | Underdosing of chloramphenicol group, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.2X6S | Underdosing of chloramphenicol group, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.3 Poisoning by, adverse effect of and underdosing of macrolides | ||||
| T36.3X Poisoning by, adverse effect of and underdosing of macrolides | ||||
| T36.3X1 Poisoning by macrolides, accidental (unintentional) | ||||
| T36.3X1A | Poisoning by macrolides, accidental (unintentional), initial encounterCMS: Poisoning by macrolides, accidental (unintentional), init | Can lead a claim | A | None |
| T36.3X1D | Poisoning by macrolides, accidental (unintentional), subsequent encounterCMS: Poisoning by macrolides, accidental (unintentional), subs | Can lead a claim | A | None |
| T36.3X1S | Poisoning by macrolides, accidental (unintentional), sequela | Can lead a claim | A | None |
| T36.3X2 Poisoning by macrolides, intentional self-harm | ||||
| T36.3X2A | Poisoning by macrolides, intentional self-harm, initial encounterCMS: Poisoning by macrolides, intentional self-harm, init encntr | Can lead a claim | A | None |
| T36.3X2D | Poisoning by macrolides, intentional self-harm, subsequent encounterCMS: Poisoning by macrolides, intentional self-harm, subs encntr | Can lead a claim | A | None |
| T36.3X2S | Poisoning by macrolides, intentional self-harm, sequela | Can lead a claim | A | None |
| T36.3X3 Poisoning by macrolides, assault | ||||
| T36.3X3A | Poisoning by macrolides, assault, initial encounter | Can lead a claim | A | None |
| T36.3X3D | Poisoning by macrolides, assault, subsequent encounter | Can lead a claim | A | None |
| T36.3X3S | Poisoning by macrolides, assault, sequela | Can lead a claim | A | None |
| T36.3X4 Poisoning by macrolides, undetermined | ||||
| T36.3X4A | Poisoning by macrolides, undetermined, initial encounter | Can lead a claim | A | None |
| T36.3X4D | Poisoning by macrolides, undetermined, subsequent encounter | Can lead a claim | A | None |
| T36.3X4S | Poisoning by macrolides, undetermined, sequela | Can lead a claim | A | None |
| T36.3X5 Adverse effect of macrolides | ||||
| T36.3X5A | Adverse effect of macrolides, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.3X5D | Adverse effect of macrolides, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.3X5S | Adverse effect of macrolides, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.3X6 Underdosing of macrolides | ||||
| T36.3X6A | Underdosing of macrolides, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.3X6D | Underdosing of macrolides, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.3X6S | Underdosing of macrolides, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.4 Poisoning by, adverse effect of and underdosing of tetracyclines | ||||
| T36.4X Poisoning by, adverse effect of and underdosing of tetracyclines | ||||
| T36.4X1 Poisoning by tetracyclines, accidental (unintentional) | ||||
| T36.4X1A | Poisoning by tetracyclines, accidental (unintentional), initial encounterCMS: Poisoning by tetracyclines, accidental (unintentional), init | Can lead a claim | A | None |
| T36.4X1D | Poisoning by tetracyclines, accidental (unintentional), subsequent encounterCMS: Poisoning by tetracyclines, accidental (unintentional), subs | Can lead a claim | A | None |
| T36.4X1S | Poisoning by tetracyclines, accidental (unintentional), sequelaCMS: Poisoning by tetracyclines, accidental, sequela | Can lead a claim | A | None |
| T36.4X2 Poisoning by tetracyclines, intentional self-harm | ||||
| T36.4X2A | Poisoning by tetracyclines, intentional self-harm, initial encounterCMS: Poisoning by tetracyclines, intentional self-harm, init | Can lead a claim | A | None |
| T36.4X2D | Poisoning by tetracyclines, intentional self-harm, subsequent encounterCMS: Poisoning by tetracyclines, intentional self-harm, subs | Can lead a claim | A | None |
| T36.4X2S | Poisoning by tetracyclines, intentional self-harm, sequela | Can lead a claim | A | None |
| T36.4X3 Poisoning by tetracyclines, assault | ||||
| T36.4X3A | Poisoning by tetracyclines, assault, initial encounter | Can lead a claim | A | None |
| T36.4X3D | Poisoning by tetracyclines, assault, subsequent encounter | Can lead a claim | A | None |
| T36.4X3S | Poisoning by tetracyclines, assault, sequela | Can lead a claim | A | None |
| T36.4X4 Poisoning by tetracyclines, undetermined | ||||
| T36.4X4A | Poisoning by tetracyclines, undetermined, initial encounter | Can lead a claim | A | None |
| T36.4X4D | Poisoning by tetracyclines, undetermined, subsequent encounterCMS: Poisoning by tetracyclines, undetermined, subs encntr | Can lead a claim | A | None |
| T36.4X4S | Poisoning by tetracyclines, undetermined, sequela | Can lead a claim | A | None |
| T36.4X5 Adverse effect of tetracyclines | ||||
| T36.4X5A | Adverse effect of tetracyclines, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.4X5D | Adverse effect of tetracyclines, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.4X5S | Adverse effect of tetracyclines, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.4X6 Underdosing of tetracyclines | ||||
| T36.4X6A | Underdosing of tetracyclines, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.4X6D | Underdosing of tetracyclines, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.4X6S | Underdosing of tetracyclines, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.5 Poisoning by, adverse effect of and underdosing of aminoglycosides | ||||
| T36.5X Poisoning by, adverse effect of and underdosing of aminoglycosides | ||||
| T36.5X1 Poisoning by aminoglycosides, accidental (unintentional) | ||||
| T36.5X1A | Poisoning by aminoglycosides, accidental (unintentional), initial encounterCMS: Poisoning by aminoglycosides, accidental, init | Can lead a claim | A | None |
| T36.5X1D | Poisoning by aminoglycosides, accidental (unintentional), subsequent encounterCMS: Poisoning by aminoglycosides, accidental, subs | Can lead a claim | A | None |
| T36.5X1S | Poisoning by aminoglycosides, accidental (unintentional), sequelaCMS: Poisoning by aminoglycosides, accidental, sequela | Can lead a claim | A | None |
| T36.5X2 Poisoning by aminoglycosides, intentional self-harm | ||||
| T36.5X2A | Poisoning by aminoglycosides, intentional self-harm, initial encounterCMS: Poisoning by aminoglycosides, intentional self-harm, init | Can lead a claim | A | None |
| T36.5X2D | Poisoning by aminoglycosides, intentional self-harm, subsequent encounterCMS: Poisoning by aminoglycosides, intentional self-harm, subs | Can lead a claim | A | None |
| T36.5X2S | Poisoning by aminoglycosides, intentional self-harm, sequela | Can lead a claim | A | None |
| T36.5X3 Poisoning by aminoglycosides, assault | ||||
| T36.5X3A | Poisoning by aminoglycosides, assault, initial encounter | Can lead a claim | A | None |
| T36.5X3D | Poisoning by aminoglycosides, assault, subsequent encounter | Can lead a claim | A | None |
| T36.5X3S | Poisoning by aminoglycosides, assault, sequela | Can lead a claim | A | None |
| T36.5X4 Poisoning by aminoglycosides, undetermined | ||||
| T36.5X4A | Poisoning by aminoglycosides, undetermined, initial encounterCMS: Poisoning by aminoglycosides, undetermined, init encntr | Can lead a claim | A | None |
| T36.5X4D | Poisoning by aminoglycosides, undetermined, subsequent encounterCMS: Poisoning by aminoglycosides, undetermined, subs encntr | Can lead a claim | A | None |
| T36.5X4S | Poisoning by aminoglycosides, undetermined, sequela | Can lead a claim | A | None |
| T36.5X5 Adverse effect of aminoglycosides | ||||
| T36.5X5A | Adverse effect of aminoglycosides, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.5X5D | Adverse effect of aminoglycosides, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.5X5S | Adverse effect of aminoglycosides, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.5X6 Underdosing of aminoglycosides | ||||
| T36.5X6A | Underdosing of aminoglycosides, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.5X6D | Underdosing of aminoglycosides, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.5X6S | Underdosing of aminoglycosides, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.6 Poisoning by, adverse effect of and underdosing of rifampicins | ||||
| T36.6X Poisoning by, adverse effect of and underdosing of rifampicins | ||||
| T36.6X1 Poisoning by rifampicins, accidental (unintentional) | ||||
| T36.6X1A | Poisoning by rifampicins, accidental (unintentional), initial encounterCMS: Poisoning by rifampicins, accidental (unintentional), init | Can lead a claim | A | None |
| T36.6X1D | Poisoning by rifampicins, accidental (unintentional), subsequent encounterCMS: Poisoning by rifampicins, accidental (unintentional), subs | Can lead a claim | A | None |
| T36.6X1S | Poisoning by rifampicins, accidental (unintentional), sequelaCMS: Poisoning by rifampicins, accidental, sequela | Can lead a claim | A | None |
| T36.6X2 Poisoning by rifampicins, intentional self-harm | ||||
| T36.6X2A | Poisoning by rifampicins, intentional self-harm, initial encounterCMS: Poisoning by rifampicins, intentional self-harm, init encntr | Can lead a claim | A | None |
| T36.6X2D | Poisoning by rifampicins, intentional self-harm, subsequent encounterCMS: Poisoning by rifampicins, intentional self-harm, subs encntr | Can lead a claim | A | None |
| T36.6X2S | Poisoning by rifampicins, intentional self-harm, sequela | Can lead a claim | A | None |
| T36.6X3 Poisoning by rifampicins, assault | ||||
| T36.6X3A | Poisoning by rifampicins, assault, initial encounter | Can lead a claim | A | None |
| T36.6X3D | Poisoning by rifampicins, assault, subsequent encounter | Can lead a claim | A | None |
| T36.6X3S | Poisoning by rifampicins, assault, sequela | Can lead a claim | A | None |
| T36.6X4 Poisoning by rifampicins, undetermined | ||||
| T36.6X4A | Poisoning by rifampicins, undetermined, initial encounter | Can lead a claim | A | None |
| T36.6X4D | Poisoning by rifampicins, undetermined, subsequent encounter | Can lead a claim | A | None |
| T36.6X4S | Poisoning by rifampicins, undetermined, sequela | Can lead a claim | A | None |
| T36.6X5 Adverse effect of rifampicins | ||||
| T36.6X5A | Adverse effect of rifampicins, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.6X5D | Adverse effect of rifampicins, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.6X5S | Adverse effect of rifampicins, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.6X6 Underdosing of rifampicins | ||||
| T36.6X6A | Underdosing of rifampicins, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.6X6D | Underdosing of rifampicins, subsequent encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.6X6S | Underdosing of rifampicins, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.7 Poisoning by, adverse effect of and underdosing of antifungal antibiotics, systemically used | ||||
| T36.7X Poisoning by, adverse effect of and underdosing of antifungal antibiotics, systemically used | ||||
| T36.7X1 Poisoning by antifungal antibiotics, systemically used, accidental (unintentional) | ||||
| T36.7X1A | Poisoning by antifungal antibiotics, systemically used, accidental (unintentional), initial encounterCMS: Poisoning by antifungal antibiot, sys used, acc, init | Can lead a claim | A | None |
| T36.7X1D | Poisoning by antifungal antibiotics, systemically used, accidental (unintentional), subsequent encounterCMS: Poisoning by antifungal antibiot, sys used, acc, subs | Can lead a claim | A | None |
| T36.7X1S | Poisoning by antifungal antibiotics, systemically used, accidental (unintentional), sequelaCMS: Poisoning by antifungal antibiot, sys used, acc, sequela | Can lead a claim | A | None |
| T36.7X2 Poisoning by antifungal antibiotics, systemically used, intentional self-harm | ||||
| T36.7X2A | Poisoning by antifungal antibiotics, systemically used, intentional self-harm, initial encounterCMS: Poisoning by antifungal antibiot, sys used, self-harm, init | Can lead a claim | A | None |
| T36.7X2D | Poisoning by antifungal antibiotics, systemically used, intentional self-harm, subsequent encounterCMS: Poisoning by antifungal antibiot, sys used, self-harm, subs | Can lead a claim | A | None |
| T36.7X2S | Poisoning by antifungal antibiotics, systemically used, intentional self-harm, sequelaCMS: Poisoning by antifung antibiot, sys used, self-harm, sequela | Can lead a claim | A | None |
| T36.7X3 Poisoning by antifungal antibiotics, systemically used, assault | ||||
| T36.7X3A | Poisoning by antifungal antibiotics, systemically used, assault, initial encounterCMS: Poisoning by antifungal antibiotics, sys used, assault, init | Can lead a claim | A | None |
| T36.7X3D | Poisoning by antifungal antibiotics, systemically used, assault, subsequent encounterCMS: Poisoning by antifungal antibiotics, sys used, assault, subs | Can lead a claim | A | None |
| T36.7X3S | Poisoning by antifungal antibiotics, systemically used, assault, sequelaCMS: Poisoning by antifungal antibiot, sys used, assault, sequela | Can lead a claim | A | None |
| T36.7X4 Poisoning by antifungal antibiotics, systemically used, undetermined | ||||
| T36.7X4A | Poisoning by antifungal antibiotics, systemically used, undetermined, initial encounterCMS: Poisoning by antifungal antibiotics, sys used, undet, init | Can lead a claim | A | None |
| T36.7X4D | Poisoning by antifungal antibiotics, systemically used, undetermined, subsequent encounterCMS: Poisoning by antifungal antibiotics, sys used, undet, subs | Can lead a claim | A | None |
| T36.7X4S | Poisoning by antifungal antibiotics, systemically used, undetermined, sequelaCMS: Poisoning by antifungal antibiot, sys used, undet, sequela | Can lead a claim | A | None |
| T36.7X5 Adverse effect of antifungal antibiotics, systemically used | ||||
| T36.7X5A | Adverse effect of antifungal antibiotics, systemically used, initial encounterCMS: Adverse effect of antifungal antibiotics, sys used, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.7X5D | Adverse effect of antifungal antibiotics, systemically used, subsequent encounterCMS: Adverse effect of antifungal antibiotics, sys used, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.7X5S | Adverse effect of antifungal antibiotics, systemically used, sequelaCMS: Adverse effect of antifungal antibiotics, sys used, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.7X6 Underdosing of antifungal antibiotics, systemically used | ||||
| T36.7X6A | Underdosing of antifungal antibiotics, systemically used, initial encounterCMS: Underdosing of antifungal antibiotics, sys used, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.7X6D | Underdosing of antifungal antibiotics, systemically used, subsequent encounterCMS: Underdosing of antifungal antibiotics, sys used, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.7X6S | Underdosing of antifungal antibiotics, systemically used, sequelaCMS: Underdosing of antifungal antibiotics, sys used, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.8 Poisoning by, adverse effect of and underdosing of other systemic antibiotics | ||||
| T36.8X Poisoning by, adverse effect of and underdosing of other systemic antibiotics | ||||
| T36.8X1 Poisoning by other systemic antibiotics, accidental (unintentional) | ||||
| T36.8X1A | Poisoning by other systemic antibiotics, accidental (unintentional), initial encounterCMS: Poisoning by oth systemic antibiotics, accidental, init | Can lead a claim | A | None |
| T36.8X1D | Poisoning by other systemic antibiotics, accidental (unintentional), subsequent encounterCMS: Poisoning by oth systemic antibiotics, accidental, subs | Can lead a claim | A | None |
| T36.8X1S | Poisoning by other systemic antibiotics, accidental (unintentional), sequelaCMS: Poisoning by oth systemic antibiotics, accidental, sequela | Can lead a claim | A | None |
| T36.8X2 Poisoning by other systemic antibiotics, intentional self-harm | ||||
| T36.8X2A | Poisoning by other systemic antibiotics, intentional self-harm, initial encounterCMS: Poisoning by oth systemic antibiotics, self-harm, init | Can lead a claim | A | None |
| T36.8X2D | Poisoning by other systemic antibiotics, intentional self-harm, subsequent encounterCMS: Poisoning by oth systemic antibiotics, self-harm, subs | Can lead a claim | A | None |
| T36.8X2S | Poisoning by other systemic antibiotics, intentional self-harm, sequelaCMS: Poisoning by oth systemic antibiotics, self-harm, sequela | Can lead a claim | A | None |
| T36.8X3 Poisoning by other systemic antibiotics, assault | ||||
| T36.8X3A | Poisoning by other systemic antibiotics, assault, initial encounterCMS: Poisoning by oth systemic antibiotics, assault, init encntr | Can lead a claim | A | None |
| T36.8X3D | Poisoning by other systemic antibiotics, assault, subsequent encounterCMS: Poisoning by oth systemic antibiotics, assault, subs encntr | Can lead a claim | A | None |
| T36.8X3S | Poisoning by other systemic antibiotics, assault, sequela | Can lead a claim | A | None |
| T36.8X4 Poisoning by other systemic antibiotics, undetermined | ||||
| T36.8X4A | Poisoning by other systemic antibiotics, undetermined, initial encounterCMS: Poisoning by oth systemic antibiotics, undetermined, init | Can lead a claim | A | None |
| T36.8X4D | Poisoning by other systemic antibiotics, undetermined, subsequent encounterCMS: Poisoning by oth systemic antibiotics, undetermined, subs | Can lead a claim | A | None |
| T36.8X4S | Poisoning by other systemic antibiotics, undetermined, sequelaCMS: Poisoning by oth systemic antibiotics, undetermined, sequela | Can lead a claim | A | None |
| T36.8X5 Adverse effect of other systemic antibiotics | ||||
| T36.8X5A | Adverse effect of other systemic antibiotics, initial encounterCMS: Adverse effect of other systemic antibiotics, init encntr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.8X5D | Adverse effect of other systemic antibiotics, subsequent encounterCMS: Adverse effect of other systemic antibiotics, subs encntr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.8X5S | Adverse effect of other systemic antibiotics, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.8X6 Underdosing of other systemic antibiotics | ||||
| T36.8X6A | Underdosing of other systemic antibiotics, initial encounter | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.8X6D | Underdosing of other systemic antibiotics, subsequent encounterCMS: Underdosing of other systemic antibiotics, subs encntr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.8X6S | Underdosing of other systemic antibiotics, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.9 Poisoning by, adverse effect of and underdosing of unspecified systemic antibiotic | ||||
| T36.91 Poisoning by unspecified systemic antibiotic, accidental (unintentional) | ||||
| T36.91XA | Poisoning by unspecified systemic antibiotic, accidental (unintentional), initial encounterCMS: Poisoning by unsp systemic antibiotic, accidental, init | Can lead a claim | A | None |
| T36.91XD | Poisoning by unspecified systemic antibiotic, accidental (unintentional), subsequent encounterCMS: Poisoning by unsp systemic antibiotic, accidental, subs | Can lead a claim | A | None |
| T36.91XS | Poisoning by unspecified systemic antibiotic, accidental (unintentional), sequelaCMS: Poisoning by unsp systemic antibiotic, accidental, sequela | Can lead a claim | A | None |
| T36.92 Poisoning by unspecified systemic antibiotic, intentional self-harm | ||||
| T36.92XA | Poisoning by unspecified systemic antibiotic, intentional self-harm, initial encounterCMS: Poisoning by unsp systemic antibiotic, self-harm, init | Can lead a claim | A | None |
| T36.92XD | Poisoning by unspecified systemic antibiotic, intentional self-harm, subsequent encounterCMS: Poisoning by unsp systemic antibiotic, self-harm, subs | Can lead a claim | A | None |
| T36.92XS | Poisoning by unspecified systemic antibiotic, intentional self-harm, sequelaCMS: Poisoning by unsp systemic antibiotic, self-harm, sequela | Can lead a claim | A | None |
| T36.93 Poisoning by unspecified systemic antibiotic, assault | ||||
| T36.93XA | Poisoning by unspecified systemic antibiotic, assault, initial encounterCMS: Poisoning by unsp systemic antibiotic, assault, init encntr | Can lead a claim | A | None |
| T36.93XD | Poisoning by unspecified systemic antibiotic, assault, subsequent encounterCMS: Poisoning by unsp systemic antibiotic, assault, subs encntr | Can lead a claim | A | None |
| T36.93XS | Poisoning by unspecified systemic antibiotic, assault, sequelaCMS: Poisoning by unsp systemic antibiotic, assault, sequela | Can lead a claim | A | None |
| T36.94 Poisoning by unspecified systemic antibiotic, undetermined | ||||
| T36.94XA | Poisoning by unspecified systemic antibiotic, undetermined, initial encounterCMS: Poisoning by unsp systemic antibiotic, undetermined, init | Can lead a claim | A | None |
| T36.94XD | Poisoning by unspecified systemic antibiotic, undetermined, subsequent encounterCMS: Poisoning by unsp systemic antibiotic, undetermined, subs | Can lead a claim | A | None |
| T36.94XS | Poisoning by unspecified systemic antibiotic, undetermined, sequelaCMS: Poisoning by unsp systemic antibiotic, undetermined, sequela | Can lead a claim | A | None |
| T36.95 Adverse effect of unspecified systemic antibiotic | ||||
| T36.95XA | Adverse effect of unspecified systemic antibiotic, initial encounterCMS: Adverse effect of unsp systemic antibiotic, init encntr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.95XD | Adverse effect of unspecified systemic antibiotic, subsequent encounterCMS: Adverse effect of unsp systemic antibiotic, subs encntr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.95XS | Adverse effect of unspecified systemic antibiotic, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.96 Underdosing of unspecified systemic antibiotic | ||||
| T36.96XA | Underdosing of unspecified systemic antibiotic, initial encounterCMS: Underdosing of unspecified systemic antibiotic, init encntr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.96XD | Underdosing of unspecified systemic antibiotic, subsequent encounterCMS: Underdosing of unspecified systemic antibiotic, subs encntr | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.96XS | Underdosing of unspecified systemic antibiotic, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.A Poisoning by, adverse effect of and underdosing of fluoroquinolone antibiotics | ||||
| T36.AX Poisoning by, adverse effect of and underdosing of fluoroquinolone antibiotics | ||||
| T36.AX1 Poisoning by fluoroquinolone antibiotics, accidental (unintentional) | ||||
| T36.AX1A | Poisoning by fluoroquinolone antibiotics, accidental (unintentional), initial encounterCMS: Poisoning by fluoroquinolone antibiotics, accidental, init | Can lead a claim | A | None |
| T36.AX1D | Poisoning by fluoroquinolone antibiotics, accidental (unintentional), subsequent encounterCMS: Poisoning by fluoroquinolone antibiotics, accidental, subs | Can lead a claim | A | None |
| T36.AX1S | Poisoning by fluoroquinolone antibiotics, accidental (unintentional), sequelaCMS: Poisoning by fluoroquinolone antibiot, accidental, sequela | Can lead a claim | A | None |
| T36.AX2 Poisoning by fluoroquinolone antibiotics, intentional self-harm | ||||
| T36.AX2A | Poisoning by fluoroquinolone antibiotics, intentional self-harm, initial encounterCMS: Poisoning by fluoroquinolone antibiotics, self-harm, init | Can lead a claim | A | None |
| T36.AX2D | Poisoning by fluoroquinolone antibiotics, intentional self-harm, subsequent encounterCMS: Poisoning by fluoroquinolone antibiotics, self-harm, subs | Can lead a claim | A | None |
| T36.AX2S | Poisoning by fluoroquinolone antibiotics, intentional self-harm, sequelaCMS: Poisoning by fluoroquinolone antibiotics, self-harm, sequela | Can lead a claim | A | None |
| T36.AX3 Poisoning by fluoroquinolone antibiotics, assault | ||||
| T36.AX3A | Poisoning by fluoroquinolone antibiotics, assault, initial encounterCMS: Poisoning by fluoroquinolone antibiotics, assault, init | Can lead a claim | A | None |
| T36.AX3D | Poisoning by fluoroquinolone antibiotics, assault, subsequent encounterCMS: Poisoning by fluoroquinolone antibiotics, assault, subs | Can lead a claim | A | None |
| T36.AX3S | Poisoning by fluoroquinolone antibiotics, assault, sequela | Can lead a claim | A | None |
| T36.AX4 Poisoning by fluoroquinolone antibiotics, undetermined | ||||
| T36.AX4A | Poisoning by fluoroquinolone antibiotics, undetermined, initial encounterCMS: Poisoning by fluoroquinolone antibiotics, undetermined, init | Can lead a claim | A | None |
| T36.AX4D | Poisoning by fluoroquinolone antibiotics, undetermined, subsequent encounterCMS: Poisoning by fluoroquinolone antibiotics, undetermined, subs | Can lead a claim | A | None |
| T36.AX4S | Poisoning by fluoroquinolone antibiotics, undetermined, sequelaCMS: Poisoning by fluoroquinolone antibiotics, undet, sequela | Can lead a claim | A | None |
| T36.AX5 Adverse effect of fluoroquinolone antibiotics | ||||
| T36.AX5A | Adverse effect of fluoroquinolone antibiotics, initial encounterCMS: Adverse effect of fluoroquinolone antibiotics, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.AX5D | Adverse effect of fluoroquinolone antibiotics, subsequent encounterCMS: Adverse effect of fluoroquinolone antibiotics, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.AX5S | Adverse effect of fluoroquinolone antibiotics, sequela | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.AX6 Underdosing of fluoroquinolone antibiotics | ||||
| T36.AX6A | Underdosing of fluoroquinolone antibiotics, initial encounterCMS: Underdosing of fluoroquinolone antibiotics, init | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.AX6D | Underdosing of fluoroquinolone antibiotics, subsequent encounterCMS: Underdosing of fluoroquinolone antibiotics, subs | Cannot lead a claimUnacceptable principal diagnosis, code is not reportable as principal diagnosis | None | None |
| T36.AX6S | Underdosing of fluoroquinolone antibiotics, 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.
The monthly home health regs digest
What CMS changed, what's due next, and what to do about it — one email a month, no fluff. Read the first issue