ICD-10 · PDGM grouping
Q66 Congenital deformities of feet
All 32 codes in the Q66 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
32
Can lead a claim
21
Cannot lead a claim
11
What CMS assigns to Q66
21 of the 32 codes group to MMTA - Other; 11 are assigned no clinical group. None of the 32 is assigned a comorbidity subgroup. 21 of the 32 can lead a claim.
Every code in Q66
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 |
|---|---|---|---|---|
| Q66.0 Congenital talipes equinovarus | ||||
| Q66.00 | Congenital talipes equinovarus, unspecified foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q66.01 | Congenital talipes equinovarus, right foot | Can lead a claim | A | None |
| Q66.02 | Congenital talipes equinovarus, left foot | Can lead a claim | A | None |
| Q66.1 Congenital talipes calcaneovarus | ||||
| Q66.10 | Congenital talipes calcaneovarus, unspecified foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q66.11 | Congenital talipes calcaneovarus, right foot | Can lead a claim | A | None |
| Q66.12 | Congenital talipes calcaneovarus, left foot | Can lead a claim | A | None |
| Q66.2 Congenital metatarsus (primus) varus | ||||
| Q66.21 Congenital metatarsus primus varus | ||||
| Q66.211 | Congenital metatarsus primus varus, right foot | Can lead a claim | A | None |
| Q66.212 | Congenital metatarsus primus varus, left foot | Can lead a claim | A | None |
| Q66.219 | Congenital metatarsus primus varus, unspecified foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q66.22 Congenital metatarsus adductus | ||||
| Q66.221 | Congenital metatarsus adductus, right foot | Can lead a claim | A | None |
| Q66.222 | Congenital metatarsus adductus, left foot | Can lead a claim | A | None |
| Q66.229 | Congenital metatarsus adductus, unspecified foot | Can lead a claim | A | None |
| Q66.3 Other congenital varus deformities of feet | ||||
| Q66.30 | Other congenital varus deformities of feet, unspecified foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q66.31 | Other congenital varus deformities of feet, right foot | Can lead a claim | A | None |
| Q66.32 | Other congenital varus deformities of feet, left foot | Can lead a claim | A | None |
| Q66.4 Congenital talipes calcaneovalgus | ||||
| Q66.40 | Congenital talipes calcaneovalgus, unspecified foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q66.41 | Congenital talipes calcaneovalgus, right foot | Can lead a claim | A | None |
| Q66.42 | Congenital talipes calcaneovalgus, left foot | Can lead a claim | A | None |
| Q66.5 Congenital pes planus | ||||
| Q66.50 | Congenital pes planus, unspecified foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q66.51 | Congenital pes planus, right foot | Can lead a claim | A | None |
| Q66.52 | Congenital pes planus, left foot | Can lead a claim | A | None |
| Q66.6 | Other congenital valgus deformities of feet | Can lead a claim | A | None |
| Q66.7 Congenital pes cavus | ||||
| Q66.70 | Congenital pes cavus, unspecified foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q66.71 | Congenital pes cavus, right foot | Can lead a claim | A | None |
| Q66.72 | Congenital pes cavus, left foot | Can lead a claim | A | None |
| Q66.8 Other congenital deformities of feet | ||||
| Q66.80 | Congenital vertical talus deformity, unspecified foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q66.81 | Congenital vertical talus deformity, right foot | Can lead a claim | A | None |
| Q66.82 | Congenital vertical talus deformity, left foot | Can lead a claim | A | None |
| Q66.89 | Other specified congenital deformities of feet | Can lead a claim | A | None |
| Q66.9 Congenital deformity of feet, unspecified | ||||
| Q66.90 | Congenital deformity of feet, unspecified, unspecified foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q66.91 | Congenital deformity of feet, unspecified, right foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q66.92 | Congenital deformity of feet, unspecified, left foot | 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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