What does ICD-10 code M87.33 mean?

ICD-10 code M87.33 is the standardized code used for other secondary osteonecrosis of radius, ulna and carpus in medical records and coding systems.

When is ICD-10 code M87.33 used?

Doctors, hospitals, and insurers may use ICD-10 code M87.33 when recording other secondary osteonecrosis of radius, ulna and carpus in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code M87.33 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code M87.33: Other secondary osteonecrosis of radius, ulna and carpus

Name: ICD-10 Code M87.33: Other secondary osteonecrosis of radius, ulna and carpus
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:24:26.239Z

M87.33 is an ICD-10 diagnosis entry used to group records related to Other secondary osteonecrosis of radius, ulna and carpus. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the musculoskeletal system and connective tissue (M00-M99).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the musculoskeletal system and connective tissue (M00-M99).

When is it used?

May be used when a clinician documents other secondary osteonecrosis of radius, ulna and carpus in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

13Diseases of the musculoskeletal system and connective tissue (M00-M99)

block

M80-M94Osteopathies and chondropathies

block

M86-M90Other osteopathies

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

Orthopedic SpecialistRheumatologist

Sibling codes

M87.30Other secondary osteonecrosis, unspecified bonebillable M87.31Other secondary osteonecrosis, shoulder M87.32Other secondary osteonecrosis, humerus M87.34Other secondary osteonecrosis, hand and fingers M87.35Other secondary osteonecrosis, pelvis and femur M87.36Other secondary osteonecrosis, tibia and fibula M87.37Other secondary osteonecrosis, ankle and foot M87.38Other secondary osteonecrosis, other sitebillable M87.39Other secondary osteonecrosis, multiple sitesbillable

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

M87.33

Replacement codes

M87.331 — Other secondary osteonecrosis of right radiusM87.332 — Other secondary osteonecrosis of left radiusM87.333 — Other secondary osteonecrosis of unspecified radiusM87.334 — Other secondary osteonecrosis of right ulnaM87.335 — Other secondary osteonecrosis of left ulnaM87.336 — Other secondary osteonecrosis of unspecified ulnaM87.337 — Other secondary osteonecrosis of right carpusM87.338 — Other secondary osteonecrosis of left carpusM87.339 — Other secondary osteonecrosis of unspecified carpus

Common synonyms

Other secondary osteonecrosis of radius, ulna and carpus

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.