ICD-10 · PDGM grouping
T61 Toxic effect of noxious substances eaten as seafood
All 72 codes in the T61 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
72
Can lead a claim
72
Cannot lead a claim
0
What CMS assigns to T61
All 72 codes group to MMTA - Other. None of the 72 is assigned a comorbidity subgroup. Every code can lead a claim.
Every code in T61
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 |
|---|---|---|---|---|
| T61.0 Ciguatera fish poisoning | ||||
| T61.01 Ciguatera fish poisoning, accidental (unintentional) | ||||
| T61.01XA | Ciguatera fish poisoning, accidental (unintentional), initial encounterCMS: Ciguatera fish poisoning, accidental (unintentional), init | Can lead a claim | A | None |
| T61.01XD | Ciguatera fish poisoning, accidental (unintentional), subsequent encounterCMS: Ciguatera fish poisoning, accidental (unintentional), subs | Can lead a claim | A | None |
| T61.01XS | Ciguatera fish poisoning, accidental (unintentional), sequelaCMS: Ciguatera fish poisoning, accidental, sequela | Can lead a claim | A | None |
| T61.02 Ciguatera fish poisoning, intentional self-harm | ||||
| T61.02XA | Ciguatera fish poisoning, intentional self-harm, initial encounterCMS: Ciguatera fish poisoning, intentional self-harm, init encntr | Can lead a claim | A | None |
| T61.02XD | Ciguatera fish poisoning, intentional self-harm, subsequent encounterCMS: Ciguatera fish poisoning, intentional self-harm, subs encntr | Can lead a claim | A | None |
| T61.02XS | Ciguatera fish poisoning, intentional self-harm, sequela | Can lead a claim | A | None |
| T61.03 Ciguatera fish poisoning, assault | ||||
| T61.03XA | Ciguatera fish poisoning, assault, initial encounter | Can lead a claim | A | None |
| T61.03XD | Ciguatera fish poisoning, assault, subsequent encounter | Can lead a claim | A | None |
| T61.03XS | Ciguatera fish poisoning, assault, sequela | Can lead a claim | A | None |
| T61.04 Ciguatera fish poisoning, undetermined | ||||
| T61.04XA | Ciguatera fish poisoning, undetermined, initial encounter | Can lead a claim | A | None |
| T61.04XD | Ciguatera fish poisoning, undetermined, subsequent encounter | Can lead a claim | A | None |
| T61.04XS | Ciguatera fish poisoning, undetermined, sequela | Can lead a claim | A | None |
| T61.1 Scombroid fish poisoning | ||||
| T61.11 Scombroid fish poisoning, accidental (unintentional) | ||||
| T61.11XA | Scombroid fish poisoning, accidental (unintentional), initial encounterCMS: Scombroid fish poisoning, accidental (unintentional), init | Can lead a claim | A | None |
| T61.11XD | Scombroid fish poisoning, accidental (unintentional), subsequent encounterCMS: Scombroid fish poisoning, accidental (unintentional), subs | Can lead a claim | A | None |
| T61.11XS | Scombroid fish poisoning, accidental (unintentional), sequelaCMS: Scombroid fish poisoning, accidental, sequela | Can lead a claim | A | None |
| T61.12 Scombroid fish poisoning, intentional self-harm | ||||
| T61.12XA | Scombroid fish poisoning, intentional self-harm, initial encounterCMS: Scombroid fish poisoning, intentional self-harm, init encntr | Can lead a claim | A | None |
| T61.12XD | Scombroid fish poisoning, intentional self-harm, subsequent encounterCMS: Scombroid fish poisoning, intentional self-harm, subs encntr | Can lead a claim | A | None |
| T61.12XS | Scombroid fish poisoning, intentional self-harm, sequela | Can lead a claim | A | None |
| T61.13 Scombroid fish poisoning, assault | ||||
| T61.13XA | Scombroid fish poisoning, assault, initial encounter | Can lead a claim | A | None |
| T61.13XD | Scombroid fish poisoning, assault, subsequent encounter | Can lead a claim | A | None |
| T61.13XS | Scombroid fish poisoning, assault, sequela | Can lead a claim | A | None |
| T61.14 Scombroid fish poisoning, undetermined | ||||
| T61.14XA | Scombroid fish poisoning, undetermined, initial encounter | Can lead a claim | A | None |
| T61.14XD | Scombroid fish poisoning, undetermined, subsequent encounter | Can lead a claim | A | None |
| T61.14XS | Scombroid fish poisoning, undetermined, sequela | Can lead a claim | A | None |
| T61.7 Other fish and shellfish poisoning | ||||
| T61.77 Other fish poisoning | ||||
| T61.771 Other fish poisoning, accidental (unintentional) | ||||
| T61.771A | Other fish poisoning, accidental (unintentional), initial encounterCMS: Oth fish poisoning, accidental (unintentional), init encntr | Can lead a claim | A | None |
| T61.771D | Other fish poisoning, accidental (unintentional), subsequent encounterCMS: Oth fish poisoning, accidental (unintentional), subs encntr | Can lead a claim | A | None |
| T61.771S | Other fish poisoning, accidental (unintentional), sequela | Can lead a claim | A | None |
| T61.772 Other fish poisoning, intentional self-harm | ||||
| T61.772A | Other fish poisoning, intentional self-harm, initial encounterCMS: Other fish poisoning, intentional self-harm, init encntr | Can lead a claim | A | None |
| T61.772D | Other fish poisoning, intentional self-harm, subsequent encounterCMS: Other fish poisoning, intentional self-harm, subs encntr | Can lead a claim | A | None |
| T61.772S | Other fish poisoning, intentional self-harm, sequela | Can lead a claim | A | None |
| T61.773 Other fish poisoning, assault | ||||
| T61.773A | Other fish poisoning, assault, initial encounter | Can lead a claim | A | None |
| T61.773D | Other fish poisoning, assault, subsequent encounter | Can lead a claim | A | None |
| T61.773S | Other fish poisoning, assault, sequela | Can lead a claim | A | None |
| T61.774 Other fish poisoning, undetermined | ||||
| T61.774A | Other fish poisoning, undetermined, initial encounter | Can lead a claim | A | None |
| T61.774D | Other fish poisoning, undetermined, subsequent encounter | Can lead a claim | A | None |
| T61.774S | Other fish poisoning, undetermined, sequela | Can lead a claim | A | None |
| T61.78 Other shellfish poisoning | ||||
| T61.781 Other shellfish poisoning, accidental (unintentional) | ||||
| T61.781A | Other shellfish poisoning, accidental (unintentional), initial encounterCMS: Oth shellfish poisoning, accidental (unintentional), init | Can lead a claim | A | None |
| T61.781D | Other shellfish poisoning, accidental (unintentional), subsequent encounterCMS: Oth shellfish poisoning, accidental (unintentional), subs | Can lead a claim | A | None |
| T61.781S | Other shellfish poisoning, accidental (unintentional), sequelaCMS: Oth shellfish poisoning, accidental (unintentional), sequela | Can lead a claim | A | None |
| T61.782 Other shellfish poisoning, intentional self-harm | ||||
| T61.782A | Other shellfish poisoning, intentional self-harm, initial encounterCMS: Oth shellfish poisoning, intentional self-harm, init encntr | Can lead a claim | A | None |
| T61.782D | Other shellfish poisoning, intentional self-harm, subsequent encounterCMS: Oth shellfish poisoning, intentional self-harm, subs encntr | Can lead a claim | A | None |
| T61.782S | Other shellfish poisoning, intentional self-harm, sequela | Can lead a claim | A | None |
| T61.783 Other shellfish poisoning, assault | ||||
| T61.783A | Other shellfish poisoning, assault, initial encounter | Can lead a claim | A | None |
| T61.783D | Other shellfish poisoning, assault, subsequent encounter | Can lead a claim | A | None |
| T61.783S | Other shellfish poisoning, assault, sequela | Can lead a claim | A | None |
| T61.784 Other shellfish poisoning, undetermined | ||||
| T61.784A | Other shellfish poisoning, undetermined, initial encounter | Can lead a claim | A | None |
| T61.784D | Other shellfish poisoning, undetermined, subsequent encounterCMS: Other shellfish poisoning, undetermined, subs encntr | Can lead a claim | A | None |
| T61.784S | Other shellfish poisoning, undetermined, sequela | Can lead a claim | A | None |
| T61.8 Toxic effect of other seafood | ||||
| T61.8X Toxic effect of other seafood | ||||
| T61.8X1 Toxic effect of other seafood, accidental (unintentional) | ||||
| T61.8X1A | Toxic effect of other seafood, accidental (unintentional), initial encounterCMS: Toxic effect of seafood, accidental (unintentional), init | Can lead a claim | A | None |
| T61.8X1D | Toxic effect of other seafood, accidental (unintentional), subsequent encounterCMS: Toxic effect of seafood, accidental (unintentional), subs | Can lead a claim | A | None |
| T61.8X1S | Toxic effect of other seafood, accidental (unintentional), sequelaCMS: Toxic effect of seafood, accidental (unintentional), sequela | Can lead a claim | A | None |
| T61.8X2 Toxic effect of other seafood, intentional self-harm | ||||
| T61.8X2A | Toxic effect of other seafood, intentional self-harm, initial encounterCMS: Toxic effect of oth seafood, intentional self-harm, init | Can lead a claim | A | None |
| T61.8X2D | Toxic effect of other seafood, intentional self-harm, subsequent encounterCMS: Toxic effect of oth seafood, intentional self-harm, subs | Can lead a claim | A | None |
| T61.8X2S | Toxic effect of other seafood, intentional self-harm, sequelaCMS: Toxic effect of oth seafood, intentional self-harm, sequela | Can lead a claim | A | None |
| T61.8X3 Toxic effect of other seafood, assault | ||||
| T61.8X3A | Toxic effect of other seafood, assault, initial encounter | Can lead a claim | A | None |
| T61.8X3D | Toxic effect of other seafood, assault, subsequent encounter | Can lead a claim | A | None |
| T61.8X3S | Toxic effect of other seafood, assault, sequela | Can lead a claim | A | None |
| T61.8X4 Toxic effect of other seafood, undetermined | ||||
| T61.8X4A | Toxic effect of other seafood, undetermined, initial encounterCMS: Toxic effect of other seafood, undetermined, init encntr | Can lead a claim | A | None |
| T61.8X4D | Toxic effect of other seafood, undetermined, subsequent encounterCMS: Toxic effect of other seafood, undetermined, subs encntr | Can lead a claim | A | None |
| T61.8X4S | Toxic effect of other seafood, undetermined, sequela | Can lead a claim | A | None |
| T61.9 Toxic effect of unspecified seafood | ||||
| T61.91 Toxic effect of unspecified seafood, accidental (unintentional) | ||||
| T61.91XA | Toxic effect of unspecified seafood, accidental (unintentional), initial encounterCMS: Toxic effect of unsp seafood, accidental, init | Can lead a claim | A | None |
| T61.91XD | Toxic effect of unspecified seafood, accidental (unintentional), subsequent encounterCMS: Toxic effect of unsp seafood, accidental, subs | Can lead a claim | A | None |
| T61.91XS | Toxic effect of unspecified seafood, accidental (unintentional), sequelaCMS: Toxic effect of unsp seafood, accidental, sequela | Can lead a claim | A | None |
| T61.92 Toxic effect of unspecified seafood, intentional self-harm | ||||
| T61.92XA | Toxic effect of unspecified seafood, intentional self-harm, initial encounterCMS: Toxic effect of unsp seafood, intentional self-harm, init | Can lead a claim | A | None |
| T61.92XD | Toxic effect of unspecified seafood, intentional self-harm, subsequent encounterCMS: Toxic effect of unsp seafood, intentional self-harm, subs | Can lead a claim | A | None |
| T61.92XS | Toxic effect of unspecified seafood, intentional self-harm, sequelaCMS: Toxic effect of unsp seafood, intentional self-harm, sequela | Can lead a claim | A | None |
| T61.93 Toxic effect of unspecified seafood, assault | ||||
| T61.93XA | Toxic effect of unspecified seafood, assault, initial encounterCMS: Toxic effect of unspecified seafood, assault, init encntr | Can lead a claim | A | None |
| T61.93XD | Toxic effect of unspecified seafood, assault, subsequent encounterCMS: Toxic effect of unspecified seafood, assault, subs encntr | Can lead a claim | A | None |
| T61.93XS | Toxic effect of unspecified seafood, assault, sequela | Can lead a claim | A | None |
| T61.94 Toxic effect of unspecified seafood, undetermined | ||||
| T61.94XA | Toxic effect of unspecified seafood, undetermined, initial encounterCMS: Toxic effect of unsp seafood, undetermined, init encntr | Can lead a claim | A | None |
| T61.94XD | Toxic effect of unspecified seafood, undetermined, subsequent encounterCMS: Toxic effect of unsp seafood, undetermined, subs encntr | Can lead a claim | A | None |
| T61.94XS | Toxic effect of unspecified seafood, undetermined, sequela | Can lead a claim | A | 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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