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

T56 Toxic effect of metals

All 144 codes in the T56 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

144

Can lead a claim

144

Cannot lead a claim

0

What CMS assigns to T56

All 144 codes group to MMTA - Other. None of the 144 is assigned a comorbidity subgroup. Every code can lead a claim.

Every code in T56

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
T56.0 Toxic effects of lead and its compounds
T56.0X Toxic effects of lead and its compounds
T56.0X1 Toxic effect of lead and its compounds, accidental (unintentional)
T56.0X1AToxic effect of lead and its compounds, accidental (unintentional), initial encounterCMS: Toxic effect of lead and its compounds, accidental, initCan lead a claimANone
T56.0X1DToxic effect of lead and its compounds, accidental (unintentional), subsequent encounterCMS: Toxic effect of lead and its compounds, accidental, subsCan lead a claimANone
T56.0X1SToxic effect of lead and its compounds, accidental (unintentional), sequelaCMS: Toxic effect of lead and its compounds, accidental, sequelaCan lead a claimANone
T56.0X2 Toxic effect of lead and its compounds, intentional self-harm
T56.0X2AToxic effect of lead and its compounds, intentional self-harm, initial encounterCMS: Toxic effect of lead and its compounds, self-harm, initCan lead a claimANone
T56.0X2DToxic effect of lead and its compounds, intentional self-harm, subsequent encounterCMS: Toxic effect of lead and its compounds, self-harm, subsCan lead a claimANone
T56.0X2SToxic effect of lead and its compounds, intentional self-harm, sequelaCMS: Toxic effect of lead and its compounds, self-harm, sequelaCan lead a claimANone
T56.0X3 Toxic effect of lead and its compounds, assault
T56.0X3AToxic effect of lead and its compounds, assault, initial encounterCMS: Toxic effect of lead and its compounds, assault, init encntrCan lead a claimANone
T56.0X3DToxic effect of lead and its compounds, assault, subsequent encounterCMS: Toxic effect of lead and its compounds, assault, subs encntrCan lead a claimANone
T56.0X3SToxic effect of lead and its compounds, assault, sequelaCan lead a claimANone
T56.0X4 Toxic effect of lead and its compounds, undetermined
T56.0X4AToxic effect of lead and its compounds, undetermined, initial encounterCMS: Toxic effect of lead and its compounds, undetermined, initCan lead a claimANone
T56.0X4DToxic effect of lead and its compounds, undetermined, subsequent encounterCMS: Toxic effect of lead and its compounds, undetermined, subsCan lead a claimANone
T56.0X4SToxic effect of lead and its compounds, undetermined, sequelaCMS: Toxic effect of lead and its compounds, undet, sequelaCan lead a claimANone
T56.1 Toxic effects of mercury and its compounds
T56.1X Toxic effects of mercury and its compounds
T56.1X1 Toxic effect of mercury and its compounds, accidental (unintentional)
T56.1X1AToxic effect of mercury and its compounds, accidental (unintentional), initial encounterCMS: Toxic effect of mercury and its compounds, accidental, initCan lead a claimANone
T56.1X1DToxic effect of mercury and its compounds, accidental (unintentional), subsequent encounterCMS: Toxic effect of mercury and its compounds, accidental, subsCan lead a claimANone
T56.1X1SToxic effect of mercury and its compounds, accidental (unintentional), sequelaCMS: Toxic effect of mercury and its compounds, acc, sequelaCan lead a claimANone
T56.1X2 Toxic effect of mercury and its compounds, intentional self-harm
T56.1X2AToxic effect of mercury and its compounds, intentional self-harm, initial encounterCMS: Toxic effect of mercury and its compounds, self-harm, initCan lead a claimANone
T56.1X2DToxic effect of mercury and its compounds, intentional self-harm, subsequent encounterCMS: Toxic effect of mercury and its compounds, self-harm, subsCan lead a claimANone
T56.1X2SToxic effect of mercury and its compounds, intentional self-harm, sequelaCMS: Toxic effect of mercury and its compnd, self-harm, sequelaCan lead a claimANone
T56.1X3 Toxic effect of mercury and its compounds, assault
T56.1X3AToxic effect of mercury and its compounds, assault, initial encounterCMS: Toxic effect of mercury and its compounds, assault, initCan lead a claimANone
T56.1X3DToxic effect of mercury and its compounds, assault, subsequent encounterCMS: Toxic effect of mercury and its compounds, assault, subsCan lead a claimANone
T56.1X3SToxic effect of mercury and its compounds, assault, sequelaCan lead a claimANone
T56.1X4 Toxic effect of mercury and its compounds, undetermined
T56.1X4AToxic effect of mercury and its compounds, undetermined, initial encounterCMS: Toxic effect of mercury and its compounds, undet, initCan lead a claimANone
T56.1X4DToxic effect of mercury and its compounds, undetermined, subsequent encounterCMS: Toxic effect of mercury and its compounds, undet, subsCan lead a claimANone
T56.1X4SToxic effect of mercury and its compounds, undetermined, sequelaCMS: Toxic effect of mercury and its compounds, undet, sequelaCan lead a claimANone
T56.2 Toxic effects of chromium and its compounds
T56.2X Toxic effects of chromium and its compounds
T56.2X1 Toxic effect of chromium and its compounds, accidental (unintentional)
T56.2X1AToxic effect of chromium and its compounds, accidental (unintentional), initial encounterCMS: Toxic effect of chromium and its compounds, acc, initCan lead a claimANone
T56.2X1DToxic effect of chromium and its compounds, accidental (unintentional), subsequent encounterCMS: Toxic effect of chromium and its compounds, acc, subsCan lead a claimANone
T56.2X1SToxic effect of chromium and its compounds, accidental (unintentional), sequelaCMS: Toxic effect of chromium and its compounds, acc, sequelaCan lead a claimANone
T56.2X2 Toxic effect of chromium and its compounds, intentional self-harm
T56.2X2AToxic effect of chromium and its compounds, intentional self-harm, initial encounterCMS: Toxic effect of chromium and its compounds, self-harm, initCan lead a claimANone
T56.2X2DToxic effect of chromium and its compounds, intentional self-harm, subsequent encounterCMS: Toxic effect of chromium and its compounds, self-harm, subsCan lead a claimANone
T56.2X2SToxic effect of chromium and its compounds, intentional self-harm, sequelaCMS: Toxic effect of chromium and its compnd, self-harm, sequelaCan lead a claimANone
T56.2X3 Toxic effect of chromium and its compounds, assault
T56.2X3AToxic effect of chromium and its compounds, assault, initial encounterCMS: Toxic effect of chromium and its compounds, assault, initCan lead a claimANone
T56.2X3DToxic effect of chromium and its compounds, assault, subsequent encounterCMS: Toxic effect of chromium and its compounds, assault, subsCan lead a claimANone
T56.2X3SToxic effect of chromium and its compounds, assault, sequelaCan lead a claimANone
T56.2X4 Toxic effect of chromium and its compounds, undetermined
T56.2X4AToxic effect of chromium and its compounds, undetermined, initial encounterCMS: Toxic effect of chromium and its compounds, undet, initCan lead a claimANone
T56.2X4DToxic effect of chromium and its compounds, undetermined, subsequent encounterCMS: Toxic effect of chromium and its compounds, undet, subsCan lead a claimANone
T56.2X4SToxic effect of chromium and its compounds, undetermined, sequelaCMS: Toxic effect of chromium and its compounds, undet, sequelaCan lead a claimANone
T56.3 Toxic effects of cadmium and its compounds
T56.3X Toxic effects of cadmium and its compounds
T56.3X1 Toxic effect of cadmium and its compounds, accidental (unintentional)
T56.3X1AToxic effect of cadmium and its compounds, accidental (unintentional), initial encounterCMS: Toxic effect of cadmium and its compounds, accidental, initCan lead a claimANone
T56.3X1DToxic effect of cadmium and its compounds, accidental (unintentional), subsequent encounterCMS: Toxic effect of cadmium and its compounds, accidental, subsCan lead a claimANone
T56.3X1SToxic effect of cadmium and its compounds, accidental (unintentional), sequelaCMS: Toxic effect of cadmium and its compounds, acc, sequelaCan lead a claimANone
T56.3X2 Toxic effect of cadmium and its compounds, intentional self-harm
T56.3X2AToxic effect of cadmium and its compounds, intentional self-harm, initial encounterCMS: Toxic effect of cadmium and its compounds, self-harm, initCan lead a claimANone
T56.3X2DToxic effect of cadmium and its compounds, intentional self-harm, subsequent encounterCMS: Toxic effect of cadmium and its compounds, self-harm, subsCan lead a claimANone
T56.3X2SToxic effect of cadmium and its compounds, intentional self-harm, sequelaCMS: Toxic effect of cadmium and its compnd, self-harm, sequelaCan lead a claimANone
T56.3X3 Toxic effect of cadmium and its compounds, assault
T56.3X3AToxic effect of cadmium and its compounds, assault, initial encounterCMS: Toxic effect of cadmium and its compounds, assault, initCan lead a claimANone
T56.3X3DToxic effect of cadmium and its compounds, assault, subsequent encounterCMS: Toxic effect of cadmium and its compounds, assault, subsCan lead a claimANone
T56.3X3SToxic effect of cadmium and its compounds, assault, sequelaCan lead a claimANone
T56.3X4 Toxic effect of cadmium and its compounds, undetermined
T56.3X4AToxic effect of cadmium and its compounds, undetermined, initial encounterCMS: Toxic effect of cadmium and its compounds, undet, initCan lead a claimANone
T56.3X4DToxic effect of cadmium and its compounds, undetermined, subsequent encounterCMS: Toxic effect of cadmium and its compounds, undet, subsCan lead a claimANone
T56.3X4SToxic effect of cadmium and its compounds, undetermined, sequelaCMS: Toxic effect of cadmium and its compounds, undet, sequelaCan lead a claimANone
T56.4 Toxic effects of copper and its compounds
T56.4X Toxic effects of copper and its compounds
T56.4X1 Toxic effect of copper and its compounds, accidental (unintentional)
T56.4X1AToxic effect of copper and its compounds, accidental (unintentional), initial encounterCMS: Toxic effect of copper and its compounds, accidental, initCan lead a claimANone
T56.4X1DToxic effect of copper and its compounds, accidental (unintentional), subsequent encounterCMS: Toxic effect of copper and its compounds, accidental, subsCan lead a claimANone
T56.4X1SToxic effect of copper and its compounds, accidental (unintentional), sequelaCMS: Toxic effect of copper and its compounds, acc, sequelaCan lead a claimANone
T56.4X2 Toxic effect of copper and its compounds, intentional self-harm
T56.4X2AToxic effect of copper and its compounds, intentional self-harm, initial encounterCMS: Toxic effect of copper and its compounds, self-harm, initCan lead a claimANone
T56.4X2DToxic effect of copper and its compounds, intentional self-harm, subsequent encounterCMS: Toxic effect of copper and its compounds, self-harm, subsCan lead a claimANone
T56.4X2SToxic effect of copper and its compounds, intentional self-harm, sequelaCMS: Toxic effect of copper and its compounds, self-harm, sequelaCan lead a claimANone
T56.4X3 Toxic effect of copper and its compounds, assault
T56.4X3AToxic effect of copper and its compounds, assault, initial encounterCMS: Toxic effect of copper and its compounds, assault, initCan lead a claimANone
T56.4X3DToxic effect of copper and its compounds, assault, subsequent encounterCMS: Toxic effect of copper and its compounds, assault, subsCan lead a claimANone
T56.4X3SToxic effect of copper and its compounds, assault, sequelaCan lead a claimANone
T56.4X4 Toxic effect of copper and its compounds, undetermined
T56.4X4AToxic effect of copper and its compounds, undetermined, initial encounterCMS: Toxic effect of copper and its compounds, undetermined, initCan lead a claimANone
T56.4X4DToxic effect of copper and its compounds, undetermined, subsequent encounterCMS: Toxic effect of copper and its compounds, undetermined, subsCan lead a claimANone
T56.4X4SToxic effect of copper and its compounds, undetermined, sequelaCMS: Toxic effect of copper and its compounds, undet, sequelaCan lead a claimANone
T56.5 Toxic effects of zinc and its compounds
T56.5X Toxic effects of zinc and its compounds
T56.5X1 Toxic effect of zinc and its compounds, accidental (unintentional)
T56.5X1AToxic effect of zinc and its compounds, accidental (unintentional), initial encounterCMS: Toxic effect of zinc and its compounds, accidental, initCan lead a claimANone
T56.5X1DToxic effect of zinc and its compounds, accidental (unintentional), subsequent encounterCMS: Toxic effect of zinc and its compounds, accidental, subsCan lead a claimANone
T56.5X1SToxic effect of zinc and its compounds, accidental (unintentional), sequelaCMS: Toxic effect of zinc and its compounds, accidental, sequelaCan lead a claimANone
T56.5X2 Toxic effect of zinc and its compounds, intentional self-harm
T56.5X2AToxic effect of zinc and its compounds, intentional self-harm, initial encounterCMS: Toxic effect of zinc and its compounds, self-harm, initCan lead a claimANone
T56.5X2DToxic effect of zinc and its compounds, intentional self-harm, subsequent encounterCMS: Toxic effect of zinc and its compounds, self-harm, subsCan lead a claimANone
T56.5X2SToxic effect of zinc and its compounds, intentional self-harm, sequelaCMS: Toxic effect of zinc and its compounds, self-harm, sequelaCan lead a claimANone
T56.5X3 Toxic effect of zinc and its compounds, assault
T56.5X3AToxic effect of zinc and its compounds, assault, initial encounterCMS: Toxic effect of zinc and its compounds, assault, init encntrCan lead a claimANone
T56.5X3DToxic effect of zinc and its compounds, assault, subsequent encounterCMS: Toxic effect of zinc and its compounds, assault, subs encntrCan lead a claimANone
T56.5X3SToxic effect of zinc and its compounds, assault, sequelaCan lead a claimANone
T56.5X4 Toxic effect of zinc and its compounds, undetermined
T56.5X4AToxic effect of zinc and its compounds, undetermined, initial encounterCMS: Toxic effect of zinc and its compounds, undetermined, initCan lead a claimANone
T56.5X4DToxic effect of zinc and its compounds, undetermined, subsequent encounterCMS: Toxic effect of zinc and its compounds, undetermined, subsCan lead a claimANone
T56.5X4SToxic effect of zinc and its compounds, undetermined, sequelaCMS: Toxic effect of zinc and its compounds, undet, sequelaCan lead a claimANone
T56.6 Toxic effects of tin and its compounds
T56.6X Toxic effects of tin and its compounds
T56.6X1 Toxic effect of tin and its compounds, accidental (unintentional)
T56.6X1AToxic effect of tin and its compounds, accidental (unintentional), initial encounterCMS: Toxic effect of tin and its compounds, accidental, initCan lead a claimANone
T56.6X1DToxic effect of tin and its compounds, accidental (unintentional), subsequent encounterCMS: Toxic effect of tin and its compounds, accidental, subsCan lead a claimANone
T56.6X1SToxic effect of tin and its compounds, accidental (unintentional), sequelaCMS: Toxic effect of tin and its compounds, accidental, sequelaCan lead a claimANone
T56.6X2 Toxic effect of tin and its compounds, intentional self-harm
T56.6X2AToxic effect of tin and its compounds, intentional self-harm, initial encounterCMS: Toxic effect of tin and its compounds, self-harm, initCan lead a claimANone
T56.6X2DToxic effect of tin and its compounds, intentional self-harm, subsequent encounterCMS: Toxic effect of tin and its compounds, self-harm, subsCan lead a claimANone
T56.6X2SToxic effect of tin and its compounds, intentional self-harm, sequelaCMS: Toxic effect of tin and its compounds, self-harm, sequelaCan lead a claimANone
T56.6X3 Toxic effect of tin and its compounds, assault
T56.6X3AToxic effect of tin and its compounds, assault, initial encounterCMS: Toxic effect of tin and its compounds, assault, init encntrCan lead a claimANone
T56.6X3DToxic effect of tin and its compounds, assault, subsequent encounterCMS: Toxic effect of tin and its compounds, assault, subs encntrCan lead a claimANone
T56.6X3SToxic effect of tin and its compounds, assault, sequelaCan lead a claimANone
T56.6X4 Toxic effect of tin and its compounds, undetermined
T56.6X4AToxic effect of tin and its compounds, undetermined, initial encounterCMS: Toxic effect of tin and its compounds, undetermined, initCan lead a claimANone
T56.6X4DToxic effect of tin and its compounds, undetermined, subsequent encounterCMS: Toxic effect of tin and its compounds, undetermined, subsCan lead a claimANone
T56.6X4SToxic effect of tin and its compounds, undetermined, sequelaCan lead a claimANone
T56.7 Toxic effects of beryllium and its compounds
T56.7X Toxic effects of beryllium and its compounds
T56.7X1 Toxic effect of beryllium and its compounds, accidental (unintentional)
T56.7X1AToxic effect of beryllium and its compounds, accidental (unintentional), initial encounterCMS: Toxic effect of beryllium and its compounds, acc, initCan lead a claimANone
T56.7X1DToxic effect of beryllium and its compounds, accidental (unintentional), subsequent encounterCMS: Toxic effect of beryllium and its compounds, acc, subsCan lead a claimANone
T56.7X1SToxic effect of beryllium and its compounds, accidental (unintentional), sequelaCMS: Toxic effect of beryllium and its compounds, acc, sequelaCan lead a claimANone
T56.7X2 Toxic effect of beryllium and its compounds, intentional self-harm
T56.7X2AToxic effect of beryllium and its compounds, intentional self-harm, initial encounterCMS: Toxic effect of beryllium and its compounds, self-harm, initCan lead a claimANone
T56.7X2DToxic effect of beryllium and its compounds, intentional self-harm, subsequent encounterCMS: Toxic effect of beryllium and its compounds, self-harm, subsCan lead a claimANone
T56.7X2SToxic effect of beryllium and its compounds, intentional self-harm, sequelaCMS: Toxic effect of beryllium and its compnd, self-harm, sequelaCan lead a claimANone
T56.7X3 Toxic effect of beryllium and its compounds, assault
T56.7X3AToxic effect of beryllium and its compounds, assault, initial encounterCMS: Toxic effect of beryllium and its compounds, assault, initCan lead a claimANone
T56.7X3DToxic effect of beryllium and its compounds, assault, subsequent encounterCMS: Toxic effect of beryllium and its compounds, assault, subsCan lead a claimANone
T56.7X3SToxic effect of beryllium and its compounds, assault, sequelaCMS: Toxic effect of beryllium and its compnd, assault, sequelaCan lead a claimANone
T56.7X4 Toxic effect of beryllium and its compounds, undetermined
T56.7X4AToxic effect of beryllium and its compounds, undetermined, initial encounterCMS: Toxic effect of beryllium and its compounds, undet, initCan lead a claimANone
T56.7X4DToxic effect of beryllium and its compounds, undetermined, subsequent encounterCMS: Toxic effect of beryllium and its compounds, undet, subsCan lead a claimANone
T56.7X4SToxic effect of beryllium and its compounds, undetermined, sequelaCMS: Toxic effect of beryllium and its compounds, undet, sequelaCan lead a claimANone
T56.8 Toxic effects of other metals
T56.81 Toxic effect of thallium
T56.811 Toxic effect of thallium, accidental (unintentional)
T56.811AToxic effect of thallium, accidental (unintentional), initial encounterCMS: Toxic effect of thallium, accidental (unintentional), initCan lead a claimANone
T56.811DToxic effect of thallium, accidental (unintentional), subsequent encounterCMS: Toxic effect of thallium, accidental (unintentional), subsCan lead a claimANone
T56.811SToxic effect of thallium, accidental (unintentional), sequelaCMS: Toxic effect of thallium, accidental, sequelaCan lead a claimANone
T56.812 Toxic effect of thallium, intentional self-harm
T56.812AToxic effect of thallium, intentional self-harm, initial encounterCMS: Toxic effect of thallium, intentional self-harm, init encntrCan lead a claimANone
T56.812DToxic effect of thallium, intentional self-harm, subsequent encounterCMS: Toxic effect of thallium, intentional self-harm, subs encntrCan lead a claimANone
T56.812SToxic effect of thallium, intentional self-harm, sequelaCan lead a claimANone
T56.813 Toxic effect of thallium, assault
T56.813AToxic effect of thallium, assault, initial encounterCan lead a claimANone
T56.813DToxic effect of thallium, assault, subsequent encounterCan lead a claimANone
T56.813SToxic effect of thallium, assault, sequelaCan lead a claimANone
T56.814 Toxic effect of thallium, undetermined
T56.814AToxic effect of thallium, undetermined, initial encounterCan lead a claimANone
T56.814DToxic effect of thallium, undetermined, subsequent encounterCan lead a claimANone
T56.814SToxic effect of thallium, undetermined, sequelaCan lead a claimANone
T56.82 Toxic effect of gadolinium
T56.821 Toxic effect of gadolinium, accidental (unintentional)
T56.821AToxic effect of gadolinium, accidental (unintentional), initial encounterCMS: Toxic effect of gadolinium, accidental (unintentional), initCan lead a claimANone
T56.821DToxic effect of gadolinium, accidental (unintentional), subsequent encounterCMS: Toxic effect of gadolinium, accidental (unintentional), subsCan lead a claimANone
T56.821SToxic effect of gadolinium, accidental (unintentional), sequelaCMS: Toxic effect of gadolinium, accidental, sequelaCan lead a claimANone
T56.822 Toxic effect of gadolinium, intentional self-harm
T56.822AToxic effect of gadolinium, intentional self-harm, initial encounterCMS: Toxic effect of gadolinium, self-harm, initial encounterCan lead a claimANone
T56.822DToxic effect of gadolinium, intentional self-harm, subsequent encounterCMS: Toxic effect of gadolinium, self-harm, subsequent encounterCan lead a claimANone
T56.822SToxic effect of gadolinium, intentional self-harm, sequelaCan lead a claimANone
T56.823 Toxic effect of gadolinium, assault
T56.823AToxic effect of gadolinium, assault, initial encounterCan lead a claimANone
T56.823DToxic effect of gadolinium, assault, subsequent encounterCan lead a claimANone
T56.823SToxic effect of gadolinium, assault, sequelaCan lead a claimANone
T56.824 Toxic effect of gadolinium, undetermined
T56.824AToxic effect of gadolinium, undetermined, initial encounterCan lead a claimANone
T56.824DToxic effect of gadolinium, undetermined, subsequent encounterCMS: Toxic effect of gadolinium, undetermined, subsCan lead a claimANone
T56.824SToxic effect of gadolinium, undetermined, sequelaCan lead a claimANone
T56.89 Toxic effects of other metals
T56.891 Toxic effect of other metals, accidental (unintentional)
T56.891AToxic effect of other metals, accidental (unintentional), initial encounterCMS: Toxic effect of oth metals, accidental (unintentional), initCan lead a claimANone
T56.891DToxic effect of other metals, accidental (unintentional), subsequent encounterCMS: Toxic effect of oth metals, accidental (unintentional), subsCan lead a claimANone
T56.891SToxic effect of other metals, accidental (unintentional), sequelaCMS: Toxic effect of metals, accidental (unintentional), sequelaCan lead a claimANone
T56.892 Toxic effect of other metals, intentional self-harm
T56.892AToxic effect of other metals, intentional self-harm, initial encounterCMS: Toxic effect of oth metals, intentional self-harm, initCan lead a claimANone
T56.892DToxic effect of other metals, intentional self-harm, subsequent encounterCMS: Toxic effect of oth metals, intentional self-harm, subsCan lead a claimANone
T56.892SToxic effect of other metals, intentional self-harm, sequelaCan lead a claimANone
T56.893 Toxic effect of other metals, assault
T56.893AToxic effect of other metals, assault, initial encounterCan lead a claimANone
T56.893DToxic effect of other metals, assault, subsequent encounterCan lead a claimANone
T56.893SToxic effect of other metals, assault, sequelaCan lead a claimANone
T56.894 Toxic effect of other metals, undetermined
T56.894AToxic effect of other metals, undetermined, initial encounterCMS: Toxic effect of other metals, undetermined, init encntrCan lead a claimANone
T56.894DToxic effect of other metals, undetermined, subsequent encounterCMS: Toxic effect of other metals, undetermined, subs encntrCan lead a claimANone
T56.894SToxic effect of other metals, undetermined, sequelaCan lead a claimANone
T56.9 Toxic effects of unspecified metal
T56.91 Toxic effect of unspecified metal, accidental (unintentional)
T56.91XAToxic effect of unspecified metal, accidental (unintentional), initial encounterCMS: Toxic effect of unsp metal, accidental (unintentional), initCan lead a claimANone
T56.91XDToxic effect of unspecified metal, accidental (unintentional), subsequent encounterCMS: Toxic effect of unsp metal, accidental (unintentional), subsCan lead a claimANone
T56.91XSToxic effect of unspecified metal, accidental (unintentional), sequelaCMS: Toxic effect of unsp metal, accidental, sequelaCan lead a claimANone
T56.92 Toxic effect of unspecified metal, intentional self-harm
T56.92XAToxic effect of unspecified metal, intentional self-harm, initial encounterCMS: Toxic effect of unsp metal, intentional self-harm, initCan lead a claimANone
T56.92XDToxic effect of unspecified metal, intentional self-harm, subsequent encounterCMS: Toxic effect of unsp metal, intentional self-harm, subsCan lead a claimANone
T56.92XSToxic effect of unspecified metal, intentional self-harm, sequelaCMS: Toxic effect of unsp metal, intentional self-harm, sequelaCan lead a claimANone
T56.93 Toxic effect of unspecified metal, assault
T56.93XAToxic effect of unspecified metal, assault, initial encounterCMS: Toxic effect of unspecified metal, assault, init encntrCan lead a claimANone
T56.93XDToxic effect of unspecified metal, assault, subsequent encounterCMS: Toxic effect of unspecified metal, assault, subs encntrCan lead a claimANone
T56.93XSToxic effect of unspecified metal, assault, sequelaCan lead a claimANone
T56.94 Toxic effect of unspecified metal, undetermined
T56.94XAToxic effect of unspecified metal, undetermined, initial encounterCMS: Toxic effect of unspecified metal, undetermined, init encntrCan lead a claimANone
T56.94XDToxic effect of unspecified metal, undetermined, subsequent encounterCMS: Toxic effect of unspecified metal, undetermined, subs encntrCan lead a claimANone
T56.94XSToxic effect of unspecified metal, undetermined, 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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