ICD-10 · PDGM grouping
H49 Paralytic strabismus
All 29 codes in the H49 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
29
Can lead a claim
22
Cannot lead a claim
7
What CMS assigns to H49
22 of the 29 codes group to MMTA - Other; 7 are assigned no clinical group. None of the 29 is assigned a comorbidity subgroup. 22 of the 29 can lead a claim.
Every code in H49
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 |
|---|---|---|---|---|
| H49.0 Third [oculomotor] nerve palsy | ||||
| H49.00 | Third [oculomotor] nerve palsy, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H49.01 | Third [oculomotor] nerve palsy, right eye | Can lead a claim | A | None |
| H49.02 | Third [oculomotor] nerve palsy, left eye | Can lead a claim | A | None |
| H49.03 | Third [oculomotor] nerve palsy, bilateral | Can lead a claim | A | None |
| H49.1 Fourth [trochlear] nerve palsy | ||||
| H49.10 | Fourth [trochlear] nerve palsy, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H49.11 | Fourth [trochlear] nerve palsy, right eye | Can lead a claim | A | None |
| H49.12 | Fourth [trochlear] nerve palsy, left eye | Can lead a claim | A | None |
| H49.13 | Fourth [trochlear] nerve palsy, bilateral | Can lead a claim | A | None |
| H49.2 Sixth [abducent] nerve palsy | ||||
| H49.20 | Sixth [abducent] nerve palsy, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H49.21 | Sixth [abducent] nerve palsy, right eye | Can lead a claim | A | None |
| H49.22 | Sixth [abducent] nerve palsy, left eye | Can lead a claim | A | None |
| H49.23 | Sixth [abducent] nerve palsy, bilateral | Can lead a claim | A | None |
| H49.3 Total (external) ophthalmoplegia | ||||
| H49.30 | Total (external) ophthalmoplegia, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H49.31 | Total (external) ophthalmoplegia, right eye | Can lead a claim | A | None |
| H49.32 | Total (external) ophthalmoplegia, left eye | Can lead a claim | A | None |
| H49.33 | Total (external) ophthalmoplegia, bilateral | Can lead a claim | A | None |
| H49.4 Progressive external ophthalmoplegia | ||||
| H49.40 | Progressive external ophthalmoplegia, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H49.41 | Progressive external ophthalmoplegia, right eye | Can lead a claim | A | None |
| H49.42 | Progressive external ophthalmoplegia, left eye | Can lead a claim | A | None |
| H49.43 | Progressive external ophthalmoplegia, bilateral | Can lead a claim | A | None |
| H49.8 Other paralytic strabismus | ||||
| H49.81 Kearns-Sayre syndrome | ||||
| H49.811 | Kearns-Sayre syndrome, right eye | Can lead a claim | A | None |
| H49.812 | Kearns-Sayre syndrome, left eye | Can lead a claim | A | None |
| H49.813 | Kearns-Sayre syndrome, bilateral | Can lead a claim | A | None |
| H49.819 | Kearns-Sayre syndrome, unspecified eye | Cannot lead a claimUnspecified diagnosis code not acceptable as principal diagnosis since there is a more specific code available that would further accurately identify the condition | None | None |
| H49.88 Other paralytic strabismus | ||||
| H49.881 | Other paralytic strabismus, right eye | Can lead a claim | A | None |
| H49.882 | Other paralytic strabismus, left eye | Can lead a claim | A | None |
| H49.883 | Other paralytic strabismus, bilateral | Can lead a claim | A | None |
| H49.889 | Other paralytic strabismus, unspecified eye | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| H49.9 | Unspecified paralytic strabismus | Can lead a claim | A | 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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