ICD-10 · PDGM grouping
Q27 Other congenital malformations of peripheral vascular system
All 12 codes in the Q27 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
12
Can lead a claim
10
Cannot lead a claim
2
What CMS assigns to Q27
10 of the 12 codes group to MMTA - Other; 2 are assigned no clinical group. None of the 12 is assigned a comorbidity subgroup. 10 of the 12 can lead a claim.
Every code in Q27
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 |
|---|---|---|---|---|
| Q27.0 | Congenital absence and hypoplasia of umbilical artery | Can lead a claim | A | None |
| Q27.1 | Congenital renal artery stenosis | Can lead a claim | A | None |
| Q27.2 | Other congenital malformations of renal artery | Can lead a claim | A | None |
| Q27.3 Arteriovenous malformation (peripheral) | ||||
| Q27.30 | Arteriovenous malformation, site unspecified | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q27.31 | Arteriovenous malformation of vessel of upper limb | Can lead a claim | A | None |
| Q27.32 | Arteriovenous malformation of vessel of lower limb | Can lead a claim | A | None |
| Q27.33 | Arteriovenous malformation of digestive system vessel | Can lead a claim | A | None |
| Q27.34 | Arteriovenous malformation of renal vessel | Can lead a claim | A | None |
| Q27.39 | Arteriovenous malformation, other site | Can lead a claim | A | None |
| Q27.4 | Congenital phlebectasia | Can lead a claim | A | None |
| Q27.8 | Other specified congenital malformations of peripheral vascular systemCMS: Oth congenital malformations of peripheral vascular system | Can lead a claim | A | None |
| Q27.9 | Congenital malformation of peripheral vascular system, unspecifiedCMS: Congenital malformation of peripheral vascular 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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