ICD-10 · PDGM grouping
Q79 Congenital malformations of musculoskeletal system, not elsewhere classified
All 14 codes in the Q79 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.
Codes in family
14
Can lead a claim
13
Cannot lead a claim
1
What CMS assigns to Q79
13 of the 14 codes group to MMTA - Other; 1 is assigned no clinical group. None of the 14 is assigned a comorbidity subgroup. 13 of the 14 can lead a claim.
Every code in Q79
Descriptions are CDC’s FY2027 wording; where CMS’s grouper abbreviates one, its form is shown beneath.
| Code | Description | Primary position | Clinical group | Comorbidity subgroup |
|---|---|---|---|---|
| Q79.0 | Congenital diaphragmatic hernia | Can lead a claim | A | None |
| Q79.1 | Other congenital malformations of diaphragm | Can lead a claim | A | None |
| Q79.2 | Exomphalos | Can lead a claim | A | None |
| Q79.3 | Gastroschisis | Can lead a claim | A | None |
| Q79.4 | Prune belly syndrome | Can lead a claim | A | None |
| Q79.5 Other congenital malformations of abdominal wall | ||||
| Q79.51 | Congenital hernia of bladder | Can lead a claim | A | None |
| Q79.59 | Other congenital malformations of abdominal wall | Can lead a claim | A | None |
| Q79.6 Ehlers-Danlos syndromes | ||||
| Q79.60 | Ehlers-Danlos syndrome, unspecified | Can lead a claim | A | None |
| Q79.61 | Classical Ehlers-Danlos syndrome | Can lead a claim | A | None |
| Q79.62 | Hypermobile Ehlers-Danlos syndrome | Can lead a claim | A | None |
| Q79.63 | Vascular Ehlers-Danlos syndrome | Can lead a claim | A | None |
| Q79.69 | Other Ehlers-Danlos syndromes | Can lead a claim | A | None |
| Q79.8 | Other congenital malformations of musculoskeletal system | Can lead a claim | A | None |
| Q79.9 | Congenital malformation of musculoskeletal system, unspecifiedCMS: Congenital malformation of musculoskeletal system, unsp | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
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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