ICD-10-CM Code M21.869

Other specified acquired deformities of unspecified lower leg

Version 2020 Billable Code

Valid for Submission

M21.869 is a billable code used to specify a medical diagnosis of other specified acquired deformities of unspecified lower leg. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code M21.869 might also be used to specify conditions or terms like abnormal prominence of patella, absence of fibula, absence of tibia, acquired deformity of lower leg, acquired deformity of lower leg, acquired external tibial torsion, etc

ICD-10:M21.869
Short Description:Oth acquired deformities of unspecified lower leg
Long Description:Other specified acquired deformities of unspecified lower leg

Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Abnormal prominence of patella
  • Absence of fibula
  • Absence of tibia
  • Acquired deformity of lower leg
  • Acquired deformity of lower leg
  • Acquired external tibial torsion
  • Acquired genu recurvatum
  • Acquired internal tibial torsion
  • Acquired pronation deformity of ankle
  • Bowing deformity of lower leg
  • Bowing deformity of lower limb
  • External tibial torsion
  • Fibular drift
  • Internal tibial torsion
  • Osteochondral defect of lateral malleolus
  • Tibial osteochondral defect of ankle
  • Tibial torsion

Diagnostic Related Groups

The ICD-10 code M21.869 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.

  • 564 - OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITH MCC
  • 565 - OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITH CC
  • 566 - OTHER MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE DIAGNOSES WITHOUT CC/MCC

Convert M21.869 to ICD-9

  • 736.6 - Acq knee deformity NEC (Approximate Flag)

Code Classification

  • Diseases of the musculoskeletal system and connective tissue (M00–M99)
    • Other joint disorders (M20-M25)
      • Other acquired deformities of limbs (M21)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Leg Injuries and Disorders

Your legs are made up of bones, blood vessels, muscles, and other connective tissue. They are important for motion and standing. Playing sports, running, falling, or having an accident can damage your legs. Common leg injuries include sprains and strains, joint dislocations, and fractures.

These injuries can affect the entire leg, or just the foot, ankle, knee, or hip. Certain diseases also lead to leg problems. For example, knee osteoarthritis, common in older people, can cause pain and limited motion. Problems in your veins in your legs can lead to varicose veins or deep vein thrombosis.


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