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

T67 Effects of heat and light

All 36 codes in the T67 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

36

Can lead a claim

36

Cannot lead a claim

0

What CMS assigns to T67

All 36 codes group to MMTA - Other. None of the 36 is assigned a comorbidity subgroup. Every code can lead a claim.

Every code in T67

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
T67.0 Heatstroke and sunstroke
T67.01 Heatstroke and sunstroke
T67.01XAHeatstroke and sunstroke, initial encounterCan lead a claimANone
T67.01XDHeatstroke and sunstroke, subsequent encounterCan lead a claimANone
T67.01XSHeatstroke and sunstroke, sequelaCan lead a claimANone
T67.02 Exertional heatstroke
T67.02XAExertional heatstroke, initial encounterCan lead a claimANone
T67.02XDExertional heatstroke, subsequent encounterCan lead a claimANone
T67.02XSExertional heatstroke, sequelaCan lead a claimANone
T67.09 Other heatstroke and sunstroke
T67.09XAOther heatstroke and sunstroke, initial encounterCan lead a claimANone
T67.09XDOther heatstroke and sunstroke, subsequent encounterCan lead a claimANone
T67.09XSOther heatstroke and sunstroke, sequelaCan lead a claimANone
T67.1 Heat syncope
T67.1XXAHeat syncope, initial encounterCan lead a claimANone
T67.1XXDHeat syncope, subsequent encounterCan lead a claimANone
T67.1XXSHeat syncope, sequelaCan lead a claimANone
T67.2 Heat cramp
T67.2XXAHeat cramp, initial encounterCan lead a claimANone
T67.2XXDHeat cramp, subsequent encounterCan lead a claimANone
T67.2XXSHeat cramp, sequelaCan lead a claimANone
T67.3 Heat exhaustion, anhydrotic
T67.3XXAHeat exhaustion, anhydrotic, initial encounterCan lead a claimANone
T67.3XXDHeat exhaustion, anhydrotic, subsequent encounterCan lead a claimANone
T67.3XXSHeat exhaustion, anhydrotic, sequelaCan lead a claimANone
T67.4 Heat exhaustion due to salt depletion
T67.4XXAHeat exhaustion due to salt depletion, initial encounterCan lead a claimANone
T67.4XXDHeat exhaustion due to salt depletion, subsequent encounterCan lead a claimANone
T67.4XXSHeat exhaustion due to salt depletion, sequelaCan lead a claimANone
T67.5 Heat exhaustion, unspecified
T67.5XXAHeat exhaustion, unspecified, initial encounterCan lead a claimANone
T67.5XXDHeat exhaustion, unspecified, subsequent encounterCan lead a claimANone
T67.5XXSHeat exhaustion, unspecified, sequelaCan lead a claimANone
T67.6 Heat fatigue, transient
T67.6XXAHeat fatigue, transient, initial encounterCan lead a claimANone
T67.6XXDHeat fatigue, transient, subsequent encounterCan lead a claimANone
T67.6XXSHeat fatigue, transient, sequelaCan lead a claimANone
T67.7 Heat edema
T67.7XXAHeat edema, initial encounterCan lead a claimANone
T67.7XXDHeat edema, subsequent encounterCan lead a claimANone
T67.7XXSHeat edema, sequelaCan lead a claimANone
T67.8 Other effects of heat and light
T67.8XXAOther effects of heat and light, initial encounterCan lead a claimANone
T67.8XXDOther effects of heat and light, subsequent encounterCan lead a claimANone
T67.8XXSOther effects of heat and light, sequelaCan lead a claimANone
T67.9 Effect of heat and light, unspecified
T67.9XXAEffect of heat and light, unspecified, initial encounterCan lead a claimANone
T67.9XXDEffect of heat and light, unspecified, subsequent encounterCan lead a claimANone
T67.9XXSEffect of heat and light, unspecified, 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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