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

F84 Pervasive developmental disorders

All 6 codes in the F84 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

5

Cannot lead a claim

1

What CMS assigns to F84

5 of the 6 codes group to Behavioral Health; 1 is assigned no clinical group. None of the 6 is assigned a comorbidity subgroup. 5 of the 6 can lead a claim.

Every code in F84

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
F84.0Autistic disorderCan lead a claimFNone
F84.2Rett's syndromeCan lead a claimFNone
F84.3Other childhood disintegrative disorderCan lead a claimFNone
F84.5Asperger's syndromeCan lead a claimFNone
F84.8Other pervasive developmental disordersCan lead a claimFNone
F84.9Pervasive developmental disorder, unspecifiedCannot lead a claimPrincipal diagnosis not assigned to a clinical groupNoneNone

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.

The monthly home health regs digest

What CMS changed, what's due next, and what to do about it — one email a month, no fluff. Read the first issue