M87.80 is the authoritative medical code for Other osteonecrosis, unspecified bone. This classification is used in medical billing and clinical recording to specify the clinical criteria for other osteonecrosis, unspecified bone (ICD-10-CM M87.80), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Other osteonecrosis, unspecified bone is a billable ICD-10-CM diagnosis code M87.80. Includes: avascular necrosis of bone. Excludes1 (not coded here): juvenile osteonecrosis M91-M92; osteochondropathies M90-M93; postprocedural osteopathies M96.-. Use additional code: code to identify major osseous defect, if applicable M89.7-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for M87.80 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- avascular necrosis of bone
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- juvenile osteonecrosis M91-M92
- osteochondropathies M90-M93
- postprocedural osteopathies M96.-
Use Additional Code
Supplementary codes the tabular list directs you to add.
- code to identify major osseous defect, if applicable M89.7-
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with M87.80?
Per Excludes1 instructions, M87.80 must not be reported with: juvenile osteonecrosis (M91-M92); osteochondropathies (M90-M93); postprocedural osteopathies (M96.-).
Is an additional code needed with M87.80?
Use additional code(s) to specify: code to identify major osseous defect, if applicable (M89.7-).
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as M87.80, with their registry titles.
- M87 — Osteonecrosis
- M87.0 — Idiopathic aseptic necrosis of bone
- M87.00 — Idiopathic aseptic necrosis of unspecified bone
- M87.01 — Idiopathic aseptic necrosis of shoulder
- M87.011 — Idiopathic aseptic necrosis of right shoulder
- M87.012 — Idiopathic aseptic necrosis of left shoulder
- M87.019 — Idiopathic aseptic necrosis of unspecified shoulder
- M87.02 — Idiopathic aseptic necrosis of humerus
- M87.021 — Idiopathic aseptic necrosis of right humerus
- M87.022 — Idiopathic aseptic necrosis of left humerus
- M87.029 — Idiopathic aseptic necrosis of unspecified humerus
- M87.03 — Idiopathic aseptic necrosis of radius, ulna and carpus
- M87.031 — Idiopathic aseptic necrosis of right radius
- M87.032 — Idiopathic aseptic necrosis of left radius
- M87.033 — Idiopathic aseptic necrosis of unspecified radius
- M87.034 — Idiopathic aseptic necrosis of right ulna
- M87.035 — Idiopathic aseptic necrosis of left ulna
- M87.036 — Idiopathic aseptic necrosis of unspecified ulna
- M87.037 — Idiopathic aseptic necrosis of right carpus
- M87.038 — Idiopathic aseptic necrosis of left carpus
- M87.039 — Idiopathic aseptic necrosis of unspecified carpus
- M87.04 — Idiopathic aseptic necrosis of hand and fingers
- M87.041 — Idiopathic aseptic necrosis of right hand
- M87.042 — Idiopathic aseptic necrosis of left hand
- M87.043 — Idiopathic aseptic necrosis of unspecified hand
- M87.044 — Idiopathic aseptic necrosis of right finger(s)
- M87.045 — Idiopathic aseptic necrosis of left finger(s)
- M87.046 — Idiopathic aseptic necrosis of unspecified finger(s)
- M87.05 — Idiopathic aseptic necrosis of pelvis and femur
- M87.050 — Idiopathic aseptic necrosis of pelvis
- M87.051 — Idiopathic aseptic necrosis of right femur
- M87.052 — Idiopathic aseptic necrosis of left femur
- M87.059 — Idiopathic aseptic necrosis of unspecified femur
- M87.06 — Idiopathic aseptic necrosis of tibia and fibula
- M87.061 — Idiopathic aseptic necrosis of right tibia
- M87.062 — Idiopathic aseptic necrosis of left tibia
- M87.063 — Idiopathic aseptic necrosis of unspecified tibia
- M87.064 — Idiopathic aseptic necrosis of right fibula
- M87.065 — Idiopathic aseptic necrosis of left fibula
- M87.066 — Idiopathic aseptic necrosis of unspecified fibula
Indexed Clinical Terms (1)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Osteonecrosis, specified type NEC
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code M85.80
Other specified disorders of bone density and structure, unspecified site
ICD Code M90.80
Osteopathy in diseases classified elsewhere, unspecified site
ICD Code M91.80
Other juvenile osteochondrosis of hip and pelvis, unspecified leg