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

X36 Avalanche, landslide and other earth movements

All 6 codes in the X36 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

6

Can lead a claim

0

Cannot lead a claim

6

What CMS assigns to X36

None of the 6 codes is assigned a clinical group. None of the 6 is assigned a comorbidity subgroup. None can lead a claim.

Every code in X36

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
X36.0 Collapse of dam or man-made structure causing earth movement
X36.0XXACollapse of dam or man-made structure causing earth movement, initial encounterCMS: Collapse of dam or man-made struct cause earth movmnt, initCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
X36.0XXDCollapse of dam or man-made structure causing earth movement, subsequent encounterCMS: Collapse of dam or man-made struct cause earth movmnt, subsCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
X36.0XXSCollapse of dam or man-made structure causing earth movement, sequelaCMS: Collapse of dam or man-made struct cause earth movmnt, sqlaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
X36.1 Avalanche, landslide, or mudslide
X36.1XXAAvalanche, landslide, or mudslide, initial encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
X36.1XXDAvalanche, landslide, or mudslide, subsequent encounterCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone
X36.1XXSAvalanche, landslide, or mudslide, sequelaCannot lead a claimExternal cause of injury code not reportable as principal diagnosisNoneNone

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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