ICD-10 · PDGM grouping
M19 Other and unspecified osteoarthritis
All 52 codes in the M19 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.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in family
52
Can lead a claim
33
Cannot lead a claim
19
What CMS assigns to M19
33 of the 52 codes group to Musculoskeletal Rehabilitation; 19 are assigned no clinical group. None of the 52 is assigned a comorbidity subgroup. 33 of the 52 can lead a claim.
Every code in M19
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 |
|---|---|---|---|---|
| M19.0 Primary osteoarthritis of other joints | ||||
| M19.01 Primary osteoarthritis, shoulder | ||||
| M19.011 | Primary osteoarthritis, right shoulder | Can lead a claim | E | None |
| M19.012 | Primary osteoarthritis, left shoulder | Can lead a claim | E | None |
| M19.019 | Primary osteoarthritis, unspecified shoulder | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.02 Primary osteoarthritis, elbow | ||||
| M19.021 | Primary osteoarthritis, right elbow | Can lead a claim | E | None |
| M19.022 | Primary osteoarthritis, left elbow | Can lead a claim | E | None |
| M19.029 | Primary osteoarthritis, unspecified elbow | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.03 Primary osteoarthritis, wrist | ||||
| M19.031 | Primary osteoarthritis, right wrist | Can lead a claim | E | None |
| M19.032 | Primary osteoarthritis, left wrist | Can lead a claim | E | None |
| M19.039 | Primary osteoarthritis, unspecified wrist | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.04 Primary osteoarthritis, hand | ||||
| M19.041 | Primary osteoarthritis, right hand | Can lead a claim | E | None |
| M19.042 | Primary osteoarthritis, left hand | Can lead a claim | E | None |
| M19.049 | Primary osteoarthritis, unspecified hand | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.07 Primary osteoarthritis ankle and foot | ||||
| M19.071 | Primary osteoarthritis, right ankle and foot | Can lead a claim | E | None |
| M19.072 | Primary osteoarthritis, left ankle and foot | Can lead a claim | E | None |
| M19.079 | Primary osteoarthritis, unspecified ankle and foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.09 | Primary osteoarthritis, other specified site | Can lead a claim | E | None |
| M19.1 Post-traumatic osteoarthritis of other joints | ||||
| M19.11 Post-traumatic osteoarthritis, shoulder | ||||
| M19.111 | Post-traumatic osteoarthritis, right shoulder | Can lead a claim | E | None |
| M19.112 | Post-traumatic osteoarthritis, left shoulder | Can lead a claim | E | None |
| M19.119 | Post-traumatic osteoarthritis, unspecified shoulder | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.12 Post-traumatic osteoarthritis, elbow | ||||
| M19.121 | Post-traumatic osteoarthritis, right elbow | Can lead a claim | E | None |
| M19.122 | Post-traumatic osteoarthritis, left elbow | Can lead a claim | E | None |
| M19.129 | Post-traumatic osteoarthritis, unspecified elbow | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.13 Post-traumatic osteoarthritis, wrist | ||||
| M19.131 | Post-traumatic osteoarthritis, right wrist | Can lead a claim | E | None |
| M19.132 | Post-traumatic osteoarthritis, left wrist | Can lead a claim | E | None |
| M19.139 | Post-traumatic osteoarthritis, unspecified wrist | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.14 Post-traumatic osteoarthritis, hand | ||||
| M19.141 | Post-traumatic osteoarthritis, right hand | Can lead a claim | E | None |
| M19.142 | Post-traumatic osteoarthritis, left hand | Can lead a claim | E | None |
| M19.149 | Post-traumatic osteoarthritis, unspecified hand | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.17 Post-traumatic osteoarthritis, ankle and foot | ||||
| M19.171 | Post-traumatic osteoarthritis, right ankle and foot | Can lead a claim | E | None |
| M19.172 | Post-traumatic osteoarthritis, left ankle and foot | Can lead a claim | E | None |
| M19.179 | Post-traumatic osteoarthritis, unspecified ankle and foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.19 | Post-traumatic osteoarthritis, other specified site | Can lead a claim | E | None |
| M19.2 Secondary osteoarthritis of other joints | ||||
| M19.21 Secondary osteoarthritis, shoulder | ||||
| M19.211 | Secondary osteoarthritis, right shoulder | Can lead a claim | E | None |
| M19.212 | Secondary osteoarthritis, left shoulder | Can lead a claim | E | None |
| M19.219 | Secondary osteoarthritis, unspecified shoulder | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.22 Secondary osteoarthritis, elbow | ||||
| M19.221 | Secondary osteoarthritis, right elbow | Can lead a claim | E | None |
| M19.222 | Secondary osteoarthritis, left elbow | Can lead a claim | E | None |
| M19.229 | Secondary osteoarthritis, unspecified elbow | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.23 Secondary osteoarthritis, wrist | ||||
| M19.231 | Secondary osteoarthritis, right wrist | Can lead a claim | E | None |
| M19.232 | Secondary osteoarthritis, left wrist | Can lead a claim | E | None |
| M19.239 | Secondary osteoarthritis, unspecified wrist | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.24 Secondary osteoarthritis, hand | ||||
| M19.241 | Secondary osteoarthritis, right hand | Can lead a claim | E | None |
| M19.242 | Secondary osteoarthritis, left hand | Can lead a claim | E | None |
| M19.249 | Secondary osteoarthritis, unspecified hand | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.27 Secondary osteoarthritis, ankle and foot | ||||
| M19.271 | Secondary osteoarthritis, right ankle and foot | Can lead a claim | E | None |
| M19.272 | Secondary osteoarthritis, left ankle and foot | Can lead a claim | E | None |
| M19.279 | Secondary osteoarthritis, unspecified ankle and foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.29 | Secondary osteoarthritis, other specified site | Can lead a claim | E | None |
| M19.9 Osteoarthritis, unspecified site | ||||
| M19.90 | Unspecified osteoarthritis, unspecified site | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.91 | Primary osteoarthritis, unspecified site | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.92 | Post-traumatic osteoarthritis, unspecified site | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M19.93 | Secondary osteoarthritis, unspecified site | 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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