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

See what changed

ICD-10 · PDGM grouping

T57 Toxic effect of other inorganic substances

All 72 codes in the T57 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 T57

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 T57

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
T57.0 Toxic effect of arsenic and its compounds
T57.0X Toxic effect of arsenic and its compounds
T57.0X1 Toxic effect of arsenic and its compounds, accidental (unintentional)
T57.0X1AToxic effect of arsenic and its compounds, accidental (unintentional), initial encounterCMS: Toxic effect of arsenic and its compounds, accidental, initCan lead a claimANone
T57.0X1DToxic effect of arsenic and its compounds, accidental (unintentional), subsequent encounterCMS: Toxic effect of arsenic and its compounds, accidental, subsCan lead a claimANone
T57.0X1SToxic effect of arsenic and its compounds, accidental (unintentional), sequelaCMS: Toxic effect of arsenic and its compounds, acc, sequelaCan lead a claimANone
T57.0X2 Toxic effect of arsenic and its compounds, intentional self-harm
T57.0X2AToxic effect of arsenic and its compounds, intentional self-harm, initial encounterCMS: Toxic effect of arsenic and its compounds, self-harm, initCan lead a claimANone
T57.0X2DToxic effect of arsenic and its compounds, intentional self-harm, subsequent encounterCMS: Toxic effect of arsenic and its compounds, self-harm, subsCan lead a claimANone
T57.0X2SToxic effect of arsenic and its compounds, intentional self-harm, sequelaCMS: Toxic effect of arsenic and its compnd, self-harm, sequelaCan lead a claimANone
T57.0X3 Toxic effect of arsenic and its compounds, assault
T57.0X3AToxic effect of arsenic and its compounds, assault, initial encounterCMS: Toxic effect of arsenic and its compounds, assault, initCan lead a claimANone
T57.0X3DToxic effect of arsenic and its compounds, assault, subsequent encounterCMS: Toxic effect of arsenic and its compounds, assault, subsCan lead a claimANone
T57.0X3SToxic effect of arsenic and its compounds, assault, sequelaCan lead a claimANone
T57.0X4 Toxic effect of arsenic and its compounds, undetermined
T57.0X4AToxic effect of arsenic and its compounds, undetermined, initial encounterCMS: Toxic effect of arsenic and its compounds, undet, initCan lead a claimANone
T57.0X4DToxic effect of arsenic and its compounds, undetermined, subsequent encounterCMS: Toxic effect of arsenic and its compounds, undet, subsCan lead a claimANone
T57.0X4SToxic effect of arsenic and its compounds, undetermined, sequelaCMS: Toxic effect of arsenic and its compounds, undet, sequelaCan lead a claimANone
T57.1 Toxic effect of phosphorus and its compounds
T57.1X Toxic effect of phosphorus and its compounds
T57.1X1 Toxic effect of phosphorus and its compounds, accidental (unintentional)
T57.1X1AToxic effect of phosphorus and its compounds, accidental (unintentional), initial encounterCMS: Toxic effect of phosphorus and its compounds, acc, initCan lead a claimANone
T57.1X1DToxic effect of phosphorus and its compounds, accidental (unintentional), subsequent encounterCMS: Toxic effect of phosphorus and its compounds, acc, subsCan lead a claimANone
T57.1X1SToxic effect of phosphorus and its compounds, accidental (unintentional), sequelaCMS: Toxic effect of phosphorus and its compounds, acc, sequelaCan lead a claimANone
T57.1X2 Toxic effect of phosphorus and its compounds, intentional self-harm
T57.1X2AToxic effect of phosphorus and its compounds, intentional self-harm, initial encounterCMS: Toxic effect of phosphorus and its compnd, self-harm, initCan lead a claimANone
T57.1X2DToxic effect of phosphorus and its compounds, intentional self-harm, subsequent encounterCMS: Toxic effect of phosphorus and its compnd, self-harm, subsCan lead a claimANone
T57.1X2SToxic effect of phosphorus and its compounds, intentional self-harm, sequelaCMS: Toxic effect of phosphorus and its compnd, slf-hrm, sequelaCan lead a claimANone
T57.1X3 Toxic effect of phosphorus and its compounds, assault
T57.1X3AToxic effect of phosphorus and its compounds, assault, initial encounterCMS: Toxic effect of phosphorus and its compounds, assault, initCan lead a claimANone
T57.1X3DToxic effect of phosphorus and its compounds, assault, subsequent encounterCMS: Toxic effect of phosphorus and its compounds, assault, subsCan lead a claimANone
T57.1X3SToxic effect of phosphorus and its compounds, assault, sequelaCMS: Toxic effect of phosphorus and its compnd, assault, sequelaCan lead a claimANone
T57.1X4 Toxic effect of phosphorus and its compounds, undetermined
T57.1X4AToxic effect of phosphorus and its compounds, undetermined, initial encounterCMS: Toxic effect of phosphorus and its compounds, undet, initCan lead a claimANone
T57.1X4DToxic effect of phosphorus and its compounds, undetermined, subsequent encounterCMS: Toxic effect of phosphorus and its compounds, undet, subsCan lead a claimANone
T57.1X4SToxic effect of phosphorus and its compounds, undetermined, sequelaCMS: Toxic effect of phosphorus and its compounds, undet, sequelaCan lead a claimANone
T57.2 Toxic effect of manganese and its compounds
T57.2X Toxic effect of manganese and its compounds
T57.2X1 Toxic effect of manganese and its compounds, accidental (unintentional)
T57.2X1AToxic effect of manganese and its compounds, accidental (unintentional), initial encounterCMS: Toxic effect of manganese and its compounds, acc, initCan lead a claimANone
T57.2X1DToxic effect of manganese and its compounds, accidental (unintentional), subsequent encounterCMS: Toxic effect of manganese and its compounds, acc, subsCan lead a claimANone
T57.2X1SToxic effect of manganese and its compounds, accidental (unintentional), sequelaCMS: Toxic effect of manganese and its compounds, acc, sequelaCan lead a claimANone
T57.2X2 Toxic effect of manganese and its compounds, intentional self-harm
T57.2X2AToxic effect of manganese and its compounds, intentional self-harm, initial encounterCMS: Toxic effect of manganese and its compounds, self-harm, initCan lead a claimANone
T57.2X2DToxic effect of manganese and its compounds, intentional self-harm, subsequent encounterCMS: Toxic effect of manganese and its compounds, self-harm, subsCan lead a claimANone
T57.2X2SToxic effect of manganese and its compounds, intentional self-harm, sequelaCMS: Toxic effect of manganese and its compnd, self-harm, sequelaCan lead a claimANone
T57.2X3 Toxic effect of manganese and its compounds, assault
T57.2X3AToxic effect of manganese and its compounds, assault, initial encounterCMS: Toxic effect of manganese and its compounds, assault, initCan lead a claimANone
T57.2X3DToxic effect of manganese and its compounds, assault, subsequent encounterCMS: Toxic effect of manganese and its compounds, assault, subsCan lead a claimANone
T57.2X3SToxic effect of manganese and its compounds, assault, sequelaCMS: Toxic effect of manganese and its compnd, assault, sequelaCan lead a claimANone
T57.2X4 Toxic effect of manganese and its compounds, undetermined
T57.2X4AToxic effect of manganese and its compounds, undetermined, initial encounterCMS: Toxic effect of manganese and its compounds, undet, initCan lead a claimANone
T57.2X4DToxic effect of manganese and its compounds, undetermined, subsequent encounterCMS: Toxic effect of manganese and its compounds, undet, subsCan lead a claimANone
T57.2X4SToxic effect of manganese and its compounds, undetermined, sequelaCMS: Toxic effect of manganese and its compounds, undet, sequelaCan lead a claimANone
T57.3 Toxic effect of hydrogen cyanide
T57.3X Toxic effect of hydrogen cyanide
T57.3X1 Toxic effect of hydrogen cyanide, accidental (unintentional)
T57.3X1AToxic effect of hydrogen cyanide, accidental (unintentional), initial encounterCMS: Toxic effect of hydrogen cyanide, accidental, initCan lead a claimANone
T57.3X1DToxic effect of hydrogen cyanide, accidental (unintentional), subsequent encounterCMS: Toxic effect of hydrogen cyanide, accidental, subsCan lead a claimANone
T57.3X1SToxic effect of hydrogen cyanide, accidental (unintentional), sequelaCMS: Toxic effect of hydrogen cyanide, accidental, sequelaCan lead a claimANone
T57.3X2 Toxic effect of hydrogen cyanide, intentional self-harm
T57.3X2AToxic effect of hydrogen cyanide, intentional self-harm, initial encounterCMS: Toxic effect of hydrogen cyanide, self-harm, initCan lead a claimANone
T57.3X2DToxic effect of hydrogen cyanide, intentional self-harm, subsequent encounterCMS: Toxic effect of hydrogen cyanide, self-harm, subsCan lead a claimANone
T57.3X2SToxic effect of hydrogen cyanide, intentional self-harm, sequelaCMS: Toxic effect of hydrogen cyanide, self-harm, sequelaCan lead a claimANone
T57.3X3 Toxic effect of hydrogen cyanide, assault
T57.3X3AToxic effect of hydrogen cyanide, assault, initial encounterCan lead a claimANone
T57.3X3DToxic effect of hydrogen cyanide, assault, subsequent encounterCMS: Toxic effect of hydrogen cyanide, assault, subs encntrCan lead a claimANone
T57.3X3SToxic effect of hydrogen cyanide, assault, sequelaCan lead a claimANone
T57.3X4 Toxic effect of hydrogen cyanide, undetermined
T57.3X4AToxic effect of hydrogen cyanide, undetermined, initial encounterCMS: Toxic effect of hydrogen cyanide, undetermined, init encntrCan lead a claimANone
T57.3X4DToxic effect of hydrogen cyanide, undetermined, subsequent encounterCMS: Toxic effect of hydrogen cyanide, undetermined, subs encntrCan lead a claimANone
T57.3X4SToxic effect of hydrogen cyanide, undetermined, sequelaCan lead a claimANone
T57.8 Toxic effect of other specified inorganic substances
T57.8X Toxic effect of other specified inorganic substances
T57.8X1 Toxic effect of other specified inorganic substances, accidental (unintentional)
T57.8X1AToxic effect of other specified inorganic substances, accidental (unintentional), initial encounterCMS: Toxic effect of inorganic substances, accidental, initCan lead a claimANone
T57.8X1DToxic effect of other specified inorganic substances, accidental (unintentional), subsequent encounterCMS: Toxic effect of inorganic substances, accidental, subsCan lead a claimANone
T57.8X1SToxic effect of other specified inorganic substances, accidental (unintentional), sequelaCMS: Toxic effect of inorganic substances, accidental, sequelaCan lead a claimANone
T57.8X2 Toxic effect of other specified inorganic substances, intentional self-harm
T57.8X2AToxic effect of other specified inorganic substances, intentional self-harm, initial encounterCMS: Toxic effect of inorganic substances, self-harm, initCan lead a claimANone
T57.8X2DToxic effect of other specified inorganic substances, intentional self-harm, subsequent encounterCMS: Toxic effect of inorganic substances, self-harm, subsCan lead a claimANone
T57.8X2SToxic effect of other specified inorganic substances, intentional self-harm, sequelaCMS: Toxic effect of inorganic substances, self-harm, sequelaCan lead a claimANone
T57.8X3 Toxic effect of other specified inorganic substances, assault
T57.8X3AToxic effect of other specified inorganic substances, assault, initial encounterCMS: Toxic effect of oth inorganic substances, assault, initCan lead a claimANone
T57.8X3DToxic effect of other specified inorganic substances, assault, subsequent encounterCMS: Toxic effect of oth inorganic substances, assault, subsCan lead a claimANone
T57.8X3SToxic effect of other specified inorganic substances, assault, sequelaCMS: Toxic effect of oth inorganic substances, assault, sequelaCan lead a claimANone
T57.8X4 Toxic effect of other specified inorganic substances, undetermined
T57.8X4AToxic effect of other specified inorganic substances, undetermined, initial encounterCMS: Toxic effect of oth inorganic substances, undetermined, initCan lead a claimANone
T57.8X4DToxic effect of other specified inorganic substances, undetermined, subsequent encounterCMS: Toxic effect of oth inorganic substances, undetermined, subsCan lead a claimANone
T57.8X4SToxic effect of other specified inorganic substances, undetermined, sequelaCMS: Toxic effect of inorganic substances, undetermined, sequelaCan lead a claimANone
T57.9 Toxic effect of unspecified inorganic substance
T57.91 Toxic effect of unspecified inorganic substance, accidental (unintentional)
T57.91XAToxic effect of unspecified inorganic substance, accidental (unintentional), initial encounterCMS: Toxic effect of unsp inorganic substance, accidental, initCan lead a claimANone
T57.91XDToxic effect of unspecified inorganic substance, accidental (unintentional), subsequent encounterCMS: Toxic effect of unsp inorganic substance, accidental, subsCan lead a claimANone
T57.91XSToxic effect of unspecified inorganic substance, accidental (unintentional), sequelaCMS: Toxic effect of unsp inorganic substance, acc, sequelaCan lead a claimANone
T57.92 Toxic effect of unspecified inorganic substance, intentional self-harm
T57.92XAToxic effect of unspecified inorganic substance, intentional self-harm, initial encounterCMS: Toxic effect of unsp inorganic substance, self-harm, initCan lead a claimANone
T57.92XDToxic effect of unspecified inorganic substance, intentional self-harm, subsequent encounterCMS: Toxic effect of unsp inorganic substance, self-harm, subsCan lead a claimANone
T57.92XSToxic effect of unspecified inorganic substance, intentional self-harm, sequelaCMS: Toxic effect of unsp inorganic substance, self-harm, sequelaCan lead a claimANone
T57.93 Toxic effect of unspecified inorganic substance, assault
T57.93XAToxic effect of unspecified inorganic substance, assault, initial encounterCMS: Toxic effect of unsp inorganic substance, assault, initCan lead a claimANone
T57.93XDToxic effect of unspecified inorganic substance, assault, subsequent encounterCMS: Toxic effect of unsp inorganic substance, assault, subsCan lead a claimANone
T57.93XSToxic effect of unspecified inorganic substance, assault, sequelaCMS: Toxic effect of unsp inorganic substance, assault, sequelaCan lead a claimANone
T57.94 Toxic effect of unspecified inorganic substance, undetermined
T57.94XAToxic effect of unspecified inorganic substance, undetermined, initial encounterCMS: Toxic effect of unsp inorganic substance, undetermined, initCan lead a claimANone
T57.94XDToxic effect of unspecified inorganic substance, undetermined, subsequent encounterCMS: Toxic effect of unsp inorganic substance, undetermined, subsCan lead a claimANone
T57.94XSToxic effect of unspecified inorganic substance, undetermined, sequelaCMS: Toxic effect of unsp inorganic substance, undet, sequelaCan lead a claimANone

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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