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ICD-10-CM 2027 diagnosis code

M88Osteitis deformans [Paget's disease of bone]

Not billable — use a more specific code

M88 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About M88

M88 is the ICD-10-CM diagnosis code for Osteitis deformans [Paget's disease of bone]. It belongs to block M86-M90 (other osteopathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: M88.0 (skull), M88.1 (vertebrae), M88.8 (bones) and M88.9 (bone).

Don't report M88 together with the conditions in its Excludes1 note: osteitis deformans in neoplastic disease (M90.6).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under M88

Coding notes

Excludes1Not coded here — never report together with this code
  • osteitis deformans in neoplastic disease (M90.6)

Notes that apply from higher levels

Instructions written at a parent level also apply to M88.

Broader instructions also apply from M86-M90 Other osteopathies and Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Codes whose notes reference M88

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about M88

Is M88 billable?

No. M88 is a header code. Report one of its more specific subcodes instead.