M93.89 Other specified osteochondropathies multiple sites

ICD-10-CM Code M93.89: Other Specified Osteochondropathies, Multiple Sites

ICD-10-CM code M93.89 identifies other specified osteochondropathies affecting multiple anatomical sites simultaneously. This diagnosis concept is used when a provider documents a named condition, such as osteochondritis dissecans, involving two or more distinct areas. The code is billable and sits under the parent code M93.8 within the broader M93 category. 2 3 4

Plain-language overview

Code M93.89 captures named osteochondropathies that affect multiple anatomical sites simultaneously, specifically where the condition does not fit a single-site code and is not classifiable as osteochondrosis of the spine. 3

What this code represents

M93.89 represents a specified osteochondropathy, such as osteochondritis dissecans, Kienböck disease, or Freiberg infraction, that involves two or more distinct anatomical sites and no single-site M93.8x code covers the full clinical picture. 3

Coding details

M93.89 is a billable code that sits under the parent code M93.8, titled Other specified osteochondropathies, within the M93 category, whereas M93.9 is a non-billable code for unspecified osteochondropathy. 3 4

If the osteochondropathy type is not named in the documentation, M93.9x is the correct fallback code rather than M93.89, because coders must not confuse other specified with unspecified conditions. 3

Coders must check for a site-specific M93.8x laterality code before defaulting to the multiple sites code, as M93.89 is not used when only one site is affected. 3

Documentation considerations

To support M93.89, the medical chart must show that the provider has named the specific osteochondropathy condition and documented its involvement at multiple distinct anatomical sites. 3

Because the chondropathies block excludes postprocedural chondropathies, documentation for M93.89 must not describe cartilage breakdown attributable to a prior surgical procedure. 3

What the sources add

While the CMS billing article lists M93.89 as an active code, the Mira Health and Codigo sources add operational context by detailing its billable status, parent code hierarchy, and specific documentation requirements. 2 3 4

The CMS intermediary guidance document provides unrelated examples of other specified diseases of blood and malignant neoplasms, establishing that the M93.89 code itself is not detailed in that specific federal transmittal. 1

Sources

1. Intermediaries/Carriers — cms.gov; accessed 2026-07-25.
2. Article - Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Wound (A59764) — cms.gov; accessed 2026-07-25.
3. ICD-10 M93.89 - Other specified osteochondropathies multiple sites | Mira Health — mirahealth.care; accessed 2026-07-25.
4. Codigo. The #1 Billing Agency for Medical Practices — codigo.care; accessed 2026-07-25.