2024 ICD-10-CM Diagnosis Code M21.862

Other specified acquired deformities of left lower leg

ICD-10-CM Code:
M21.862
ICD-10 Code for:
Other specified acquired deformities of left lower leg
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

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

M21.862 is a billable diagnosis code used to specify a medical diagnosis of other specified acquired deformities of left lower leg. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Approximate Synonyms

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

  • Acquired bilateral genu recurvatum
  • Acquired deformity of left knee
  • Acquired deformity of left knee
  • Acquired deformity of left lower leg
  • Acquired deformity of left lower leg
  • Acquired deformity of right knee
  • Acquired deformity of right lower leg
  • Acquired genu recurvatum
  • Acquired genu recurvatum of left knee
  • Acquired genu recurvatum of left knee
  • Acquired genu recurvatum of right knee
  • Acquired internal tibial torsion
  • Acquired internal tibial torsion
  • Acquired internal torsion of tibia of bilateral lower limbs
  • Acquired internal torsion of tibia of left lower limb
  • Acquired internal torsion of tibia of left lower limb
  • Acquired internal torsion of tibia of right lower limb
  • Bilateral acquired deformity of knee regions
  • Bilateral acquired deformity of lower legs
  • Internal tibial torsion
  • Internal tibial torsion

Clinical Classification

Convert M21.862 to ICD-9-CM

  • ICD-9-CM Code: 736.6 - Acq knee deformity NEC
    Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


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 (broken bones).

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.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.