ICD-10 · PDGM grouping
Q16 Congenital malformations of ear causing impairment of hearing
All 7 codes in the Q16 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
7
Can lead a claim
0
Cannot lead a claim
7
What CMS assigns to Q16
None of the 7 codes is assigned a clinical group. None of the 7 is assigned a comorbidity subgroup. None can lead a claim.
Every code in Q16
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 |
|---|---|---|---|---|
| Q16.0 | Congenital absence of (ear) auricle | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q16.1 | Congenital absence, atresia and stricture of auditory canal (external)CMS: Congenital absence, atresia and stricture of auditory canal | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q16.2 | Absence of eustachian tube | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q16.3 | Congenital malformation of ear ossicles | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q16.4 | Other congenital malformations of middle ear | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q16.5 | Congenital malformation of inner ear | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q16.9 | Congenital malformation of ear causing impairment of hearing, unspecifiedCMS: Congen malform of ear causing impairment of hearing, 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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