ICD10BillableValid for clinical use

ICD-10 Code M20.002: Unspecified deformity of left finger(s)

M20.002 is a billable ICD-10 diagnosis code used to classify Unspecified deformity of left finger(s) 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 unspecified deformity of left finger(s) 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
M20-M25Other joint disorders
category
M20Acquired deformities of fingers and toes
category
M20.0Deformity of finger(s)
category
M20.00Unspecified deformity of finger(s)
currentM20.00

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

Unspecified deformity of left finger(s)Unspecified deformity of left fingerUnspecified deformity of left finger s

Frequently asked questions

Code details

CodeM20.002
SystemICD10
Display nameUnspecified deformity of left finger(s)
ChapterDiseases of the musculoskeletal system and connective tissue (M00-M99)
BlockOther joint disorders

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 M20.002 for Unspecified deformity of left finger(s) | HealthAssure