M88 – Osteitis deformans [Paget's disease of bone]
ICD-10-CM 2027 diagnosis code · Other osteopathies
ICD-10-CM code
M88
- Code
M88(claims format:M88)- Description
- Osteitis deformans [Paget's disease of bone]
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
- Block
- M86-M90 Other osteopathies
Billable codes under M88
M88 is a header code and cannot be used on claims. Choose the most specific code:
- M88.0 – Osteitis deformans of skullBillable
- M88.1 – Osteitis deformans of vertebraeBillable
- M88.8 – Osteitis deformans of other bonesHeader (more codes below)
- M88.9 – Osteitis deformans of unspecified boneBillable
Notes for M88
Excludes1 (not coded here):
- osteitis deformans in neoplastic disease (M90.6)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block M86-M90
Excludes1 (not coded here):
- postprocedural osteopathies (M96.-)
Frequently asked questions
What is ICD-10 code M88?
M88 is the ICD-10-CM code for osteitis deformans [Paget's disease of bone], in the block M86-M90 (Other osteopathies).
Is M88 a billable code?
No. M88 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.