ICD-10 · PDGM grouping
M15-M19 — Osteoarthritis
Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.2.26.
ICD-10-CM FY2027 · CMS grouper v07.2.26
Codes in range
98
No clinical group
30
A period cannot be grouped from these.
Barred as primary
0
CMS rejects these in the primary position.
Where these codes group
68 of the 98 codes in M15-M19 group to Musculoskeletal Rehabilitation. A further 30 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.
Code families in M15-M19
One page per three-character family: every code in it, whether it can lead a claim, its clinical group and comorbidity subgroup.
Every code in M15-M19
Descriptions are CMS’s own, abbreviated as CMS abbreviates them.
| Code | Description | Clinical group | Primary position |
|---|---|---|---|
| M150 | Primary generalized (osteo)arthritis | E | Can lead a claim |
| M151 | Heberden's nodes (with arthropathy) | E | Can lead a claim |
| M152 | Bouchard's nodes (with arthropathy) | E | Can lead a claim |
| M153 | Secondary multiple arthritis | E | Can lead a claim |
| M154 | Erosive (osteo)arthritis | E | Can lead a claim |
| M158 | Other polyosteoarthritis | E | Can lead a claim |
| M159 | Polyosteoarthritis, unspecified | E | Can lead a claim |
| M160 | Bilateral primary osteoarthritis of hip | E | Can lead a claim |
| M1610 | Unilateral primary osteoarthritis, unspecified hip | None | Cannot lead a claim |
| M1611 | Unilateral primary osteoarthritis, right hip | E | Can lead a claim |
| M1612 | Unilateral primary osteoarthritis, left hip | E | Can lead a claim |
| M162 | Bilateral osteoarthritis resulting from hip dysplasia | E | Can lead a claim |
| M1630 | Unilateral osteoarth resulting from hip dysplasia, unsp hip | None | Cannot lead a claim |
| M1631 | Unilateral osteoarth resulting from hip dysplasia, right hip | E | Can lead a claim |
| M1632 | Unilateral osteoarth resulting from hip dysplasia, left hip | E | Can lead a claim |
| M164 | Bilateral post-traumatic osteoarthritis of hip | E | Can lead a claim |
| M1650 | Unilateral post-traumatic osteoarthritis, unspecified hip | None | Cannot lead a claim |
| M1651 | Unilateral post-traumatic osteoarthritis, right hip | E | Can lead a claim |
| M1652 | Unilateral post-traumatic osteoarthritis, left hip | E | Can lead a claim |
| M166 | Other bilateral secondary osteoarthritis of hip | E | Can lead a claim |
| M167 | Other unilateral secondary osteoarthritis of hip | E | Can lead a claim |
| M169 | Osteoarthritis of hip, unspecified | None | Cannot lead a claim |
| M170 | Bilateral primary osteoarthritis of knee | E | Can lead a claim |
| M1710 | Unilateral primary osteoarthritis, unspecified knee | None | Cannot lead a claim |
| M1711 | Unilateral primary osteoarthritis, right knee | E | Can lead a claim |
| M1712 | Unilateral primary osteoarthritis, left knee | E | Can lead a claim |
| M172 | Bilateral post-traumatic osteoarthritis of knee | E | Can lead a claim |
| M1730 | Unilateral post-traumatic osteoarthritis, unspecified knee | None | Cannot lead a claim |
| M1731 | Unilateral post-traumatic osteoarthritis, right knee | E | Can lead a claim |
| M1732 | Unilateral post-traumatic osteoarthritis, left knee | E | Can lead a claim |
| M174 | Other bilateral secondary osteoarthritis of knee | E | Can lead a claim |
| M175 | Other unilateral secondary osteoarthritis of knee | E | Can lead a claim |
| M179 | Osteoarthritis of knee, unspecified | None | Cannot lead a claim |
| M180 | Bilateral primary osteoarth of first carpometacarp joints | E | Can lead a claim |
| M1810 | Unil prim osteoarth of first carpometacarp joint, unsp hand | None | Cannot lead a claim |
| M1811 | Unil primary osteoarth of first carpometacarp joint, r hand | E | Can lead a claim |
| M1812 | Unil primary osteoarth of first carpometacarp joint, l hand | E | Can lead a claim |
| M182 | Bi post-trauma osteoarth of first carpometacarp joints | E | Can lead a claim |
| M1830 | Unil post-trauma osteoarth of 1st carpometacarp jt,unsp hand | None | Cannot lead a claim |
| M1831 | Unil post-trauma osteoarth of 1st carpometacarp jt, r hand | E | Can lead a claim |
| M1832 | Unil post-trauma osteoarth of 1st carpometacarp jt, l hand | E | Can lead a claim |
| M184 | Oth bi secondary osteoarth of first carpometacarp joints | E | Can lead a claim |
| M1850 | Oth unil sec osteoarth of 1st carpometacarp joint, unsp hand | None | Cannot lead a claim |
| M1851 | Oth unil sec osteoarth of first carpometacarp joint, r hand | E | Can lead a claim |
| M1852 | Oth unil sec osteoarth of first carpometacarp joint, l hand | E | Can lead a claim |
| M189 | Osteoarthritis of first carpometacarpal joint, unspecified | None | Cannot lead a claim |
| M19011 | Primary osteoarthritis, right shoulder | E | Can lead a claim |
| M19012 | Primary osteoarthritis, left shoulder | E | Can lead a claim |
| M19019 | Primary osteoarthritis, unspecified shoulder | None | Cannot lead a claim |
| M19021 | Primary osteoarthritis, right elbow | E | Can lead a claim |
| M19022 | Primary osteoarthritis, left elbow | E | Can lead a claim |
| M19029 | Primary osteoarthritis, unspecified elbow | None | Cannot lead a claim |
| M19031 | Primary osteoarthritis, right wrist | E | Can lead a claim |
| M19032 | Primary osteoarthritis, left wrist | E | Can lead a claim |
| M19039 | Primary osteoarthritis, unspecified wrist | None | Cannot lead a claim |
| M19041 | Primary osteoarthritis, right hand | E | Can lead a claim |
| M19042 | Primary osteoarthritis, left hand | E | Can lead a claim |
| M19049 | Primary osteoarthritis, unspecified hand | None | Cannot lead a claim |
| M19071 | Primary osteoarthritis, right ankle and foot | E | Can lead a claim |
| M19072 | Primary osteoarthritis, left ankle and foot | E | Can lead a claim |
| M19079 | Primary osteoarthritis, unspecified ankle and foot | None | Cannot lead a claim |
| M1909 | Primary osteoarthritis, other specified site | E | Can lead a claim |
| M19111 | Post-traumatic osteoarthritis, right shoulder | E | Can lead a claim |
| M19112 | Post-traumatic osteoarthritis, left shoulder | E | Can lead a claim |
| M19119 | Post-traumatic osteoarthritis, unspecified shoulder | None | Cannot lead a claim |
| M19121 | Post-traumatic osteoarthritis, right elbow | E | Can lead a claim |
| M19122 | Post-traumatic osteoarthritis, left elbow | E | Can lead a claim |
| M19129 | Post-traumatic osteoarthritis, unspecified elbow | None | Cannot lead a claim |
| M19131 | Post-traumatic osteoarthritis, right wrist | E | Can lead a claim |
| M19132 | Post-traumatic osteoarthritis, left wrist | E | Can lead a claim |
| M19139 | Post-traumatic osteoarthritis, unspecified wrist | None | Cannot lead a claim |
| M19141 | Post-traumatic osteoarthritis, right hand | E | Can lead a claim |
| M19142 | Post-traumatic osteoarthritis, left hand | E | Can lead a claim |
| M19149 | Post-traumatic osteoarthritis, unspecified hand | None | Cannot lead a claim |
| M19171 | Post-traumatic osteoarthritis, right ankle and foot | E | Can lead a claim |
| M19172 | Post-traumatic osteoarthritis, left ankle and foot | E | Can lead a claim |
| M19179 | Post-traumatic osteoarthritis, unspecified ankle and foot | None | Cannot lead a claim |
| M1919 | Post-traumatic osteoarthritis, other specified site | E | Can lead a claim |
| M19211 | Secondary osteoarthritis, right shoulder | E | Can lead a claim |
| M19212 | Secondary osteoarthritis, left shoulder | E | Can lead a claim |
| M19219 | Secondary osteoarthritis, unspecified shoulder | None | Cannot lead a claim |
| M19221 | Secondary osteoarthritis, right elbow | E | Can lead a claim |
| M19222 | Secondary osteoarthritis, left elbow | E | Can lead a claim |
| M19229 | Secondary osteoarthritis, unspecified elbow | None | Cannot lead a claim |
| M19231 | Secondary osteoarthritis, right wrist | E | Can lead a claim |
| M19232 | Secondary osteoarthritis, left wrist | E | Can lead a claim |
| M19239 | Secondary osteoarthritis, unspecified wrist | None | Cannot lead a claim |
| M19241 | Secondary osteoarthritis, right hand | E | Can lead a claim |
| M19242 | Secondary osteoarthritis, left hand | E | Can lead a claim |
| M19249 | Secondary osteoarthritis, unspecified hand | None | Cannot lead a claim |
| M19271 | Secondary osteoarthritis, right ankle and foot | E | Can lead a claim |
| M19272 | Secondary osteoarthritis, left ankle and foot | E | Can lead a claim |
| M19279 | Secondary osteoarthritis, unspecified ankle and foot | None | Cannot lead a claim |
| M1929 | Secondary osteoarthritis, other specified site | E | Can lead a claim |
| M1990 | Unspecified osteoarthritis, unspecified site | None | Cannot lead a claim |
| M1991 | Primary osteoarthritis, unspecified site | None | Cannot lead a claim |
| M1992 | Post-traumatic osteoarthritis, unspecified site | None | Cannot lead a claim |
| M1993 | Secondary osteoarthritis, unspecified site | None | Cannot lead a claim |
Source: CMS HH PPS Grouper Software v07.2.26, effective 2026-10-01. 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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