ICD-10 · PDGM grouping
M88 Osteitis deformans [Paget's disease of bone]
All 26 codes in the M88 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
26
Can lead a claim
18
Cannot lead a claim
8
What CMS assigns to M88
18 of the 26 codes group to Musculoskeletal Rehabilitation; 8 are assigned no clinical group. None of the 26 is assigned a comorbidity subgroup. 18 of the 26 can lead a claim.
Every code in M88
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 |
|---|---|---|---|---|
| M88.0 | Osteitis deformans of skull | Can lead a claim | E | None |
| M88.1 | Osteitis deformans of vertebrae | Can lead a claim | E | None |
| M88.8 Osteitis deformans of other bones | ||||
| M88.81 Osteitis deformans of shoulder | ||||
| M88.811 | Osteitis deformans of right shoulder | Can lead a claim | E | None |
| M88.812 | Osteitis deformans of left shoulder | Can lead a claim | E | None |
| M88.819 | Osteitis deformans of unspecified shoulder | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M88.82 Osteitis deformans of upper arm | ||||
| M88.821 | Osteitis deformans of right upper arm | Can lead a claim | E | None |
| M88.822 | Osteitis deformans of left upper arm | Can lead a claim | E | None |
| M88.829 | Osteitis deformans of unspecified upper arm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M88.83 Osteitis deformans of forearm | ||||
| M88.831 | Osteitis deformans of right forearm | Can lead a claim | E | None |
| M88.832 | Osteitis deformans of left forearm | Can lead a claim | E | None |
| M88.839 | Osteitis deformans of unspecified forearm | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M88.84 Osteitis deformans of hand | ||||
| M88.841 | Osteitis deformans of right hand | Can lead a claim | E | None |
| M88.842 | Osteitis deformans of left hand | Can lead a claim | E | None |
| M88.849 | Osteitis deformans of unspecified hand | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M88.85 Osteitis deformans of thigh | ||||
| M88.851 | Osteitis deformans of right thigh | Can lead a claim | E | None |
| M88.852 | Osteitis deformans of left thigh | Can lead a claim | E | None |
| M88.859 | Osteitis deformans of unspecified thigh | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M88.86 Osteitis deformans of lower leg | ||||
| M88.861 | Osteitis deformans of right lower leg | Can lead a claim | E | None |
| M88.862 | Osteitis deformans of left lower leg | Can lead a claim | E | None |
| M88.869 | Osteitis deformans of unspecified lower leg | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M88.87 Osteitis deformans of ankle and foot | ||||
| M88.871 | Osteitis deformans of right ankle and foot | Can lead a claim | E | None |
| M88.872 | Osteitis deformans of left ankle and foot | Can lead a claim | E | None |
| M88.879 | Osteitis deformans of unspecified ankle and foot | Cannot lead a claimPrincipal diagnosis not assigned to a clinical group | None | None |
| M88.88 | Osteitis deformans of other bones | Can lead a claim | E | None |
| M88.89 | Osteitis deformans of multiple sites | Can lead a claim | E | None |
| M88.9 | Osteitis deformans of unspecified bone | 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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