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

Q97 Other sex chromosome abnormalities, female phenotype, not elsewhere classified

All 6 codes in the Q97 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

6

Cannot lead a claim

0

What CMS assigns to Q97

All 6 codes group to MMTA - Other. None of the 6 is assigned a comorbidity subgroup. Every code can lead a claim.

Every code in Q97

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

CodeDescriptionPrimary positionClinical groupComorbidity subgroup
Q97.0Karyotype 47, XXXCan lead a claimANone
Q97.1Female with more than three X chromosomesCan lead a claimANone
Q97.2Mosaicism, lines with various numbers of X chromosomesCan lead a claimANone
Q97.3Female with 46, XY karyotypeCan lead a claimANone
Q97.8Other specified sex chromosome abnormalities, female phenotypeCMS: Oth sex chromosome abnormalities, female phenotypeCan lead a claimANone
Q97.9Sex chromosome abnormality, female phenotype, unspecifiedCan 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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