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ICD-10-CM 2027 diagnosis code

M89.8Other specified disorders of bone

Not billable — use a more specific code

M89.8 is a header code, so it can't be reported by itself. Choose one of the 1 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 M89.8

M89.8 is the ICD-10-CM diagnosis code for other specified disorders of bone. It belongs to category M89 (other disorders of bone), 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 1 subcodes must be used instead.

Within M89, choose M89.8 (Other specified disorders of bone) only when documentation doesn't support a more specific option: Algoneurodystrophy (M89.0), physeal arrest (M89.1), development and growth (M89.2), hypertrophy of bone (M89.3), other hypertrophic osteoarthropathy (M89.4), osteolysis (M89.5), osteopathy after poliomyelitis (M89.6), major osseous defect (M89.7) and 1 more.

To report this condition, pick the subcode that matches the documentation: M89.8X (bone).

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 M89.8

Coding notes

Applicable toConditions and synonyms classified to this code
  • Infantile cortical hyperostoses
  • Post-traumatic subperiosteal ossification

Notes that apply from higher levels

Instructions written at a parent level also apply to M89.8.

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

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 M89.8

Is M89.8 billable?

No. M89.8 is a header code. Report one of its more specific subcodes instead.