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ICD-10 Code M19.172: Post-traumatic osteoarthritis, left ankle and foot

M19.172 is a billable ICD-10 diagnosis code used to classify Post-traumatic osteoarthritis, left 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).

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).

šŸ“‹Clinical overview

This ICD-10 code is commonly used when documentation describes post-traumatic osteoarthritis. The most accurate code depends on the affected joint site and whether laterality is documented.

When is it used?

  • May be used when a clinician documents post-traumatic osteoarthritis, left 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.

šŸ©ŗClinical context

When commonly used
  • Orthopedic, rehabilitation, primary-care, and utilization-review workflows where degenerative joint disease is explicitly linked to prior trauma.
  • Coding workflows where the record supports post-traumatic osteoarthritis and the final code changes based on joint site or laterality.
Common management context
  • Evaluation often includes joint pain and function review, prior-injury history, imaging context, and planning for orthopedic follow-up, rehabilitation, or symptom-directed management.
  • Documentation usually becomes more specific when the chart identifies the exact joint site, laterality, or another post-traumatic versus primary-degenerative joint context.
  • Specialist context already linked on this page includes Orthopedic Specialist, Rheumatologist.

šŸ”Key distinctions

Important notes
  • These ICD-10 codes are reserved for post-traumatic osteoarthritis rather than primary osteoarthritis or broader traumatic-arthropathy descriptions.
  • Joint-site and laterality detail drive most of the code specificity inside this family.
  • Joint-site detail matters here because shoulder, elbow, wrist, hand, hip, knee, ankle-foot, and other-site post-traumatic osteoarthritis are coded separately when the chart names the affected joint more specifically.
  • Laterality matters here because right-sided, left-sided, and unspecified-side post-traumatic osteoarthritis are coded separately when the affected joint is documented more precisely.
  • Documentation that describes post-traumatic osteoarthritis is coded differently from primary osteoarthritis, traumatic arthropathy, or nontraumatic joint derangement.
Related codes to consider
M19.171Post-traumatic osteoarthritis, right ankle and foot
Related post-traumatic-joint ICD-10 code; documentation often becomes more specific when the chart identifies the exact joint, laterality, post-traumatic osteoarthritis versus traumatic arthropathy pattern, or another joint context.
M19.179Post-traumatic osteoarthritis, unspecified ankle and foot
Related post-traumatic-joint ICD-10 code; documentation often becomes more specific when the chart identifies the exact joint, laterality, post-traumatic osteoarthritis versus traumatic arthropathy pattern, or another joint context.

Code hierarchy

chapter
13Diseases of the musculoskeletal system and connective tissue (M00-M99)
block
M00-M25Arthropathies
block
M15-M19Osteoarthritis
category
M19Other and unspecified osteoarthritis
category
M19.1Post-traumatic osteoarthritis of other joints
category
M19.17Post-traumatic osteoarthritis, ankle and foot
currentM19.17

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

Post-traumatic osteoarthritis, left ankle and foot

Frequently asked questions

Code details

CodeM19.172
SystemICD10
Display namePost-traumatic osteoarthritis, left ankle and foot
ChapterDiseases of the musculoskeletal system and connective tissue (M00-M99)
BlockOsteoarthritis

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.