ICD10BillableValid for clinical use

ICD-10 Code M12.271: Villonodular synovitis (pigmented), right ankle and foot

M12.271 is a billable ICD-10 diagnosis code used to classify Villonodular synovitis (pigmented), right ankle and foot 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 26 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 villonodular synovitis (pigmented), right ankle and foot 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
M00-M25Arthropathies
block
M05-M14Inflammatory polyarthropathies
category
M12Other and unspecified arthropathy
category
M12.2Villonodular synovitis (pigmented)
category
M12.27Villonodular synovitis (pigmented), ankle and foot
currentM12.27

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

Villonodular synovitis (pigmented), right ankle and footVillonodular synovitisVillonodular synovitis pigmented, right ankle and foot

Frequently asked questions

Code details

CodeM12.271
SystemICD10
Display nameVillonodular synovitis (pigmented), right ankle and foot
ChapterDiseases of the musculoskeletal system and connective tissue (M00-M99)
BlockInflammatory polyarthropathies

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 M12.271 for Villonodular synovitis (pigmented), right ankle and foot | HealthAssure