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ICD-10-CM 2027 diagnosis code

M87.37Other secondary osteonecrosis, ankle and foot

Not billable — use a more specific code

M87.37 is a header code, so it can't be reported by itself. Choose one of the 9 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 M87.37

M87.37 is the ICD-10-CM diagnosis code for other secondary osteonecrosis, ankle and foot. It belongs to category M87 (osteonecrosis), 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 9 subcodes must be used instead.

Within M87.3 (other secondary osteonecrosis), M87.37 is specifically for other secondary osteonecrosis, ankle and foot. Related codes cover unspecified bone (M87.30), shoulder (M87.31), humerus (M87.32), of radius, ulna and carpus (M87.33), hand and fingers (M87.34), pelvis and femur (M87.35), tibia and fibula (M87.36), other site (M87.38) and 1 more.

To report this condition, pick the subcode that matches the documentation: M87.371 (ankle), M87.372 (ankle), M87.373 (ankle), M87.374 (foot), M87.375 (foot), M87.376 (foot), M87.377 (toe(s)), M87.378 (toe(s)) and 1 more.

Use an additional code to identify major osseous defect, if applicable (M89.7-).

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 M87.37

Notes that apply from higher levels

Instructions written at a parent level also apply to M87.37.

› From M87 Osteonecrosis
Includes
  • avascular necrosis of bone
Excludes1
  • juvenile osteonecrosis (M91-M92)
  • osteochondropathies (M90-M93)
Use additional code
  • code to identify major osseous defect, if applicable (M89.7-)

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

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to M87.37.

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 M87.37

Is M87.37 billable?

No. M87.37 is a header code. Report one of its more specific subcodes instead.