S86 Injury of muscle, fascia and tendon at lower leg level

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Injury of muscle, fascia and tendon at lower leg level is S86 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
S80-S89: Injuries to the knee and lower leg (S80-S89)
Category S86
103 codes (72 billable)
FY2026 Status
Stable since FY2024
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • injury of muscle, fascia and tendon at ankle (S96.-)
  • injury of patellar ligament (tendon) (S76.1-)
  • sprain of joints and ligaments of knee (S83.-)
Code Also
  • any associated open wound (S81.-)

Official Coding Guidelines

Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.2
Do not assign injury codes for iatrogenic injuries; code complication

3) Iatrogenic injuries Injury codes from Chapter 19 should not be assigned for injuries that occur during, or as a result of, a medical intervention. Assign the appropriate complication code(s).

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.3

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference S86 with the canonical source and edition:

S86 — Injury of muscle, fascia and tendon at lower leg level. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/S86

Canonical URL: https://icd10codingpro.com/codes/S86

Related Codes

More Specific Codes

S86.0 Injury of Achilles tendon S86.1 Injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level S86.2 Injury of muscle(s) and tendon(s) of anterior muscle group at lower leg level S86.3 Injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level S86.8 Injury of other muscles and tendons at lower leg level S86.9 Injury of unspecified muscle and tendon at lower leg level

All Codes in S86

Every most-specific code under S86 Injury of muscle, fascia and tendon at lower leg level (72 codes):

Show the complete S86 code list
S86.001 Unspecified injury of right Achilles tendon S86.002 Unspecified injury of left Achilles tendon S86.009 Unspecified injury of unspecified Achilles tendon S86.011 Strain of right Achilles tendon S86.012 Strain of left Achilles tendon S86.019 Strain of unspecified Achilles tendon S86.021 Laceration of right Achilles tendon S86.022 Laceration of left Achilles tendon S86.029 Laceration of unspecified Achilles tendon S86.091 Other specified injury of right Achilles tendon S86.092 Other specified injury of left Achilles tendon S86.099 Other specified injury of unspecified Achilles tendon S86.101 Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg S86.102 Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg S86.109 Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg S86.111 Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg S86.112 Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg S86.119 Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg S86.121 Laceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg S86.122 Laceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg S86.129 Laceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg S86.191 Other injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg S86.192 Other injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg S86.199 Other injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg S86.201 Unspecified injury of muscle(s) and tendon(s) of anterior muscle group at lower leg level, right leg S86.202 Unspecified injury of muscle(s) and tendon(s) of anterior muscle group at lower leg level, left leg S86.209 Unspecified injury of muscle(s) and tendon(s) of anterior muscle group at lower leg level, unspecified leg S86.211 Strain of muscle(s) and tendon(s) of anterior muscle group at lower leg level, right leg S86.212 Strain of muscle(s) and tendon(s) of anterior muscle group at lower leg level, left leg S86.219 Strain of muscle(s) and tendon(s) of anterior muscle group at lower leg level, unspecified leg S86.221 Laceration of muscle(s) and tendon(s) of anterior muscle group at lower leg level, right leg S86.222 Laceration of muscle(s) and tendon(s) of anterior muscle group at lower leg level, left leg S86.229 Laceration of muscle(s) and tendon(s) of anterior muscle group at lower leg level, unspecified leg S86.291 Other injury of muscle(s) and tendon(s) of anterior muscle group at lower leg level, right leg S86.292 Other injury of muscle(s) and tendon(s) of anterior muscle group at lower leg level, left leg S86.299 Other injury of muscle(s) and tendon(s) of anterior muscle group at lower leg level, unspecified leg S86.301 Unspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, right leg S86.302 Unspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, left leg S86.309 Unspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg S86.311 Strain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, right leg S86.312 Strain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, left leg S86.319 Strain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg S86.321 Laceration of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, right leg S86.322 Laceration of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, left leg S86.329 Laceration of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg S86.391 Other injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, right leg S86.392 Other injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, left leg S86.399 Other injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg S86.801 Unspecified injury of other muscle(s) and tendon(s) at lower leg level, right leg S86.802 Unspecified injury of other muscle(s) and tendon(s) at lower leg level, left leg S86.809 Unspecified injury of other muscle(s) and tendon(s) at lower leg level, unspecified leg S86.811 Strain of other muscle(s) and tendon(s) at lower leg level, right leg S86.812 Strain of other muscle(s) and tendon(s) at lower leg level, left leg S86.819 Strain of other muscle(s) and tendon(s) at lower leg level, unspecified leg S86.821 Laceration of other muscle(s) and tendon(s) at lower leg level, right leg S86.822 Laceration of other muscle(s) and tendon(s) at lower leg level, left leg S86.829 Laceration of other muscle(s) and tendon(s) at lower leg level, unspecified leg S86.891 Other injury of other muscle(s) and tendon(s) at lower leg level, right leg S86.892 Other injury of other muscle(s) and tendon(s) at lower leg level, left leg S86.899 Other injury of other muscle(s) and tendon(s) at lower leg level, unspecified leg S86.901 Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, right leg S86.902 Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, left leg S86.909 Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg S86.911 Strain of unspecified muscle(s) and tendon(s) at lower leg level, right leg S86.912 Strain of unspecified muscle(s) and tendon(s) at lower leg level, left leg S86.919 Strain of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg S86.921 Laceration of unspecified muscle(s) and tendon(s) at lower leg level, right leg S86.922 Laceration of unspecified muscle(s) and tendon(s) at lower leg level, left leg S86.929 Laceration of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg S86.991 Other injury of unspecified muscle(s) and tendon(s) at lower leg level, right leg S86.992 Other injury of unspecified muscle(s) and tendon(s) at lower leg level, left leg S86.999 Other injury of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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