Version 2024

2024 ICD-10-CM Diagnosis Code S86.111

Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg

ICD-10-CM Code:
S86.111
ICD-10 Code for:
Strain of musc/tend post grp at low leg level, right leg
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Injuries to the knee and lower leg
      (S80-S89)
      • Injury of muscle, fascia and tendon at lower leg level
        (S86)

S86.111 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Strain of musc/tend post grp at low leg level, right leg

Non-specific codes like S86.111 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for strain of musc/tend post grp at low leg level, right leg:

  • Use S86.111A for initial encounter - BILLABLE CODE

  • Use S86.111D for subsequent encounter - BILLABLE CODE

  • Use S86.111S for sequela - BILLABLE CODE

Approximate Synonyms

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

  • Injury of muscle of right lower leg
  • Injury of muscle of right lower leg
  • Injury of posterior crural muscle of right lower leg
  • Injury of posterior crural muscle of right lower leg
  • Non-traumatic rupture of tendon of right foot
  • Right gastrocnemius strain
  • Rupture of plantaris tendon
  • Rupture of right plantaris tendon
  • Strain of calf muscle
  • Strain of muscle and/or tendon of lower leg
  • Strain of muscle of lower leg
  • Strain of muscle of right lower leg
  • Strain of muscle of right posterior lower leg

Coding Guidelines

The appropriate 7th character is to be added to each code from block Injury of muscle, fascia and tendon at lower leg level (S86). Use the following options for the aplicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

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.