ICD10BillableValid for clinical use

ICD-10 Code M86.261: Subacute osteomyelitis, right tibia and fibula

M86.261 is a billable ICD-10 diagnosis code used to classify Subacute osteomyelitis, right tibia and fibula in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. 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 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. 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 subacute osteomyelitis, right tibia and fibula in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

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.

Code hierarchy

chapter
13Diseases of the musculoskeletal system and connective tissue (M00-M99)
block
M80-M94Osteopathies and chondropathies
block
M86-M90Other osteopathies
category
M86Osteomyelitis
category
M86.2Subacute osteomyelitis
category
M86.26Subacute osteomyelitis, tibia and fibula
currentM86.26

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

Orthopedic SpecialistRheumatologist

Coding guidelines

Common synonyms

Subacute osteomyelitis, right tibia and fibula

Frequently asked questions

Code details

CodeM86.261
SystemICD10
Display nameSubacute osteomyelitis, right tibia and fibula
ChapterDiseases of the musculoskeletal system and connective tissue (M00-M99)
BlockOther osteopathies

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

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.

ICD-10 Code M86.261 for Subacute osteomyelitis, right tibia and fibula | HealthAssure