ICD-10-CM 2027 diagnosis code

M86.35Chronic multifocal osteomyelitis, femur

Not billable — use a more specific code

M86.35 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About M86.35

M86.35 is the ICD-10-CM diagnosis code for chronic multifocal osteomyelitis, femur. It belongs to category M86 (osteomyelitis), block M86-M90 (other osteopathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within M86.3 (chronic multifocal osteomyelitis), M86.35 is specifically for chronic multifocal osteomyelitis, femur. Related codes cover unspecified site (M86.30), shoulder (M86.31), humerus (M86.32), radius and ulna (M86.33), hand (M86.34), tibia and fibula (M86.36), ankle and foot (M86.37), other site (M86.38) and 1 more.

To report this condition, pick the subcode that matches the documentation: M86.351 (femur), M86.352 (femur) and M86.359 (femur).

Use an additional code (B95-B97) to identify infectious agent. Use an additional code to identify major osseous defect, if applicable (M89.7-).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under M86.35

Notes that apply from higher levels

Instructions written at a parent level also apply to M86.35.

› From M86 Osteomyelitis

Excludes1

osteomyelitis due to:
echinococcus (B67.2)
gonococcus (A54.43)
salmonella (A02.24)

Excludes2

ostemyelitis of:
orbit (H05.0-)
petrous bone (H70.2-)
vertebra (M46.2-)

Use additional code

code (B95-B97) to identify infectious agent
code to identify major osseous defect, if applicable (M89.7-)

Broader instructions also apply from M86-M90 Other osteopathies and Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to M86.35.

Osteomyelitis (general) (infective) (localized) (neonatal) (purulent) (septic) (staphylococcal) (streptococcal) (suppurative) (with periostitis) › chronic (or old) › hematogenous NEC › multifocal › femur

Code history

2016
2017
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2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about M86.35

Is M86.35 billable?: No. M86.35 is a header code. Report one of its more specific subcodes instead.