ICD-10 · PDGM grouping
Q13 Congenital malformations of anterior segment of eye
All 9 codes in the Q13 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
9
Can lead a claim
0
Cannot lead a claim
9
What CMS assigns to Q13
None of the 9 codes is assigned a clinical group. None of the 9 is assigned a comorbidity subgroup. None can lead a claim.
Every code in Q13
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 |
|---|---|---|---|---|
| Q13.0 | Coloboma of iris | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q13.1 | Absence of iris | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q13.2 | Other congenital malformations of iris | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q13.3 | Congenital corneal opacity | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q13.4 | Other congenital corneal malformations | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q13.5 | Blue sclera | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q13.8 Other congenital malformations of anterior segment of eye | ||||
| Q13.81 | Rieger anomaly | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q13.89 | Other congenital malformations of anterior segment of eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| Q13.9 | Congenital malformation of anterior segment of eye, unspecifiedCMS: Congenital malformation of anterior segment of eye, 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.
The monthly home health regs digest
What CMS changed, what's due next, and what to do about it — one email a month, no fluff. Read the first issue