Coding and coverage · ICD-10-CM

M87 › M87.1

M87.17 Osteonecrosis due to drugs, ankle, foot and toes

Not billable (header)Chapter 13

Report one of the more specific codes below.

Check coverage with this diagnosis

Codes under this one

  • M87.171 Osteonecrosis due to drugs, right ankle
  • M87.172 Osteonecrosis due to drugs, left ankle
  • M87.173 Osteonecrosis due to drugs, unspecified ankle
  • M87.174 Osteonecrosis due to drugs, right foot
  • M87.175 Osteonecrosis due to drugs, left foot
  • M87.176 Osteonecrosis due to drugs, unspecified foot
  • M87.177 Osteonecrosis due to drugs, right toe(s)
  • M87.178 Osteonecrosis due to drugs, left toe(s)
  • M87.179 Osteonecrosis due to drugs, unspecified toe(s)

Instructional notes

Chapter 13

Excludes2Not included here: the patient may have both; report both when both are present.
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Notes
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

M87

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
Use additional codeAdd a second code for the full picture.
  • code to identify major osseous defect, if applicable (M89.7-)
Includes
  • avascular necrosis of bone

M87.1

Use additional codeAdd a second code for the full picture.
  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Chapter 13: Diseases of the musculoskeletal system and connective tissue · M80-M94 Osteopathies and chondropathies (M80-M94)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.