M86.659 — Other chronic osteomyelitis, unspecified thigh
M86.659 is a billable, specific ICD-10-CM code for other chronic osteomyelitis, unspecified thigh. It is valid for submission on a claim.
Risk adjustment
M86.659 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 92 Bone/Joint/Muscle/Severe Soft Tissue Infections/Necrosis0.479 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
M86.659 is named in 6 Medicare coverage policies — 0 listing it as supporting medical necessity, and 6 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A58865Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
- A58893Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
- A59374Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
- A59434Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
How M86.659 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to M86.659.
- Osteomyelitis›chronic›ilium
- Osteomyelitis›chronic›ischium
Related codes at this level
Codes that share M86.65. If M86.659 is not quite right, the correct code is usually one of these.
Questions about M86.659
- Is M86.659 a billable ICD-10-CM code?
- Yes. M86.659 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does M86.659 sit in the tabular list?
- Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Other osteopathies (M86-M90).