M87.33

Other secondary osteonecrosis of radius, ulna and carpus

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This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

Inherited from M87Osteonecrosis

Includes

avascular necrosis of bone

Excludes 1

juvenile osteonecrosis (M91-M92) osteochondropathies (M90-M93)

Use additional

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

Inherited from M86-M90Other osteopathies

Excludes 1

postprocedural osteopathies (M96.-)

Inherited from chapter 13Diseases of the musculoskeletal system and connective tissue

Excludes 2

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)

Note

Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition (M00-M25) Arthropathies (M00-M25) Includes: Disorders affecting predominantly peripheral (limb) joints (M40-M54) Dorsopathies (M40-M54) (M60-M79) Soft tissue disorders (M60-M79) (M80-M94) Osteopathies and chondropathies (M80-M94)

Official Guidelines for M87.33

FY 2026 ›

I.C.13Chapter-specific guidanceChapter 13: Diseases of the Musculoskeletal System and Connective

Subsections

Sections that reference M87.33

I.C.13.a.1)Bone versus joint
For certain conditions, the bone may be affected at the upper or lower end, (e.g., avascular necrosis of bone, M87, Osteoporosis, M80, M81). …

Sections whose FY 2026 text names M87.33, its M87 category, or a range containing it — the chapter guidance above is the authoritative source.