M87

Non-Billable
ChapterM00–M99
Rankcategory
Official Description

Osteonecrosis

Metadata & Insights
  • Non-billable category (requires more specific sub-code).
  • Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).

CH13 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • 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)

M86-M90 Parent Instructions

Excludes1(Not coded here. Use a different code.)
  • postprocedural osteopathies (M96.-)

Instructional Notes

Includes
  • avascular necrosis of bone
Excludes1(Not coded here. Use a different code.)
Use Additional Code
  • code to identify major osseous defect, if applicable (M89.7-)

Clinical Hierarchy

BillableHas subcodes
CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)
M86-M90Other osteopathies (M86-M90)
M87OsteonecrosisNot billable
M87.0Idiopathic aseptic necrosis of boneSubcodes
M87.1Osteonecrosis due to drugsSubcodes
M87.2Osteonecrosis due to previous traumaSubcodes
M87.3Other secondary osteonecrosisSubcodes
M87.8Other osteonecrosisSubcodes
M87.9Osteonecrosis, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M87:

blockM86-M90
Other osteopathies (M86-M90)
View context instructions
chapterCH13
Diseases of the musculoskeletal system and connective tissue (M00-M99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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