M02.859 Other reactive arthropathies, unspecified hip

ICD-10-CM Code M02.859: Other Reactive Arthropathies, Unspecified Hip

ICD-10-CM code M02.859 is an active terminology concept with the preferred name of other reactive arthropathies, unspecified hip. It is classified with the semantic type of Disease or Syndrome and has a parent concept of M02.85. The code appears in a Medicare billing article alongside specified right and left hip codes. 1 5 4

Plain-language overview

The terminology record for M02.859 provides the preferred name of other reactive arthropathies, unspecified hip, and classifies this concept with the semantic type of Disease or Syndrome. 1 5

What this code represents

The ICD-10-CM record establishes M02.859 as an active code with a parent concept of M02.85, which represents other reactive arthropathies of the hip, and notes it has narrower concepts. 1

Coding details

The exact descriptor of other reactive arthropathies, unspecified hip for code M02.859 is confirmed across multiple code system versions, including 2022 and 2026 terminology records. 1 3

Documentation considerations

A Medicare billing and coding article lists M02.859 for other reactive arthropathies of an unspecified hip directly alongside M02.852 for the left hip and a code for the right hip. 4

Coverage and utilization context

Code M02.859 appears within a Medicare article concerning billing and coding for amniotic and placental-derived product injections for musculoskeletal indications. 4

What the sources add

While a terminology record defines M02.859 as an unspecified hip condition, a Medicare billing article places this exact code in a sequence next to specified right and left hip reactive arthropathies. 1 4

A phecode mapping resource lists other reactive arthropathies of an unspecified hip among similar unspecified joint conditions, and separately lists M02.89 for site-unspecified reactive arthropathies. 2

Clinical context

The terminology record for M02.859 indicates that this active concept has narrower concepts within the ICD-10-CM hierarchy, but does not name them or provide clinical definitions. 1

Sources

1. ICD-10-CM M02.859 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Phecode 711 · ExPRSweb — csg.sph.umich.edu; accessed 2026-07-27.
3. Browse Code Systems — vsac.nlm.nih.gov; accessed 2026-07-27.
4. Article - Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Wound (A59766) — cms.gov; accessed 2026-07-27.
5. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.