S84 Injury of nerves at lower leg level

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Injury of nerves at lower leg level is S84 (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 S84
22 codes (15 billable)
FY2026 Status
Stable since FY2024
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • injury of nerves at ankle and foot level (S94.-)
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

Related Codes

More Specific Codes

S84.0 Injury of tibial nerve at lower leg level S84.00 Injury of tibial nerve at lower leg level, unspecified leg S84.01 Injury of tibial nerve at lower leg level, right leg S84.02 Injury of tibial nerve at lower leg level, left leg S84.1 Injury of peroneal nerve at lower leg level S84.10 Injury of peroneal nerve at lower leg level, unspecified leg S84.11 Injury of peroneal nerve at lower leg level, right leg S84.12 Injury of peroneal nerve at lower leg level, left leg S84.2 Injury of cutaneous sensory nerve at lower leg level S84.20 Injury of cutaneous sensory nerve at lower leg level, unspecified leg S84.21 Injury of cutaneous sensory nerve at lower leg level, right leg S84.22 Injury of cutaneous sensory nerve at lower leg level, left leg S84.8 Injury of other nerves at lower leg level S84.80 Injury of other nerves at lower leg level S84.801 Injury of other nerves at lower leg level, right leg S84.802 Injury of other nerves at lower leg level, left leg S84.809 Injury of other nerves at lower leg level, unspecified leg S84.9 Injury of unspecified nerve at lower leg level S84.90 Injury of unspecified nerve at lower leg level, unspecified leg S84.91 Injury of unspecified nerve at lower leg level, right leg S84.92 Injury of unspecified nerve at lower leg level, left leg

Related Codes in S84

S84.0 Injury of tibial nerve at lower leg level S84.00 Injury of tibial nerve at lower leg level, unspecified leg S84.01 Injury of tibial nerve at lower leg level, right leg S84.02 Injury of tibial nerve at lower leg level, left leg S84.1 Injury of peroneal nerve at lower leg level S84.10 Injury of peroneal nerve at lower leg level, unspecified leg S84.11 Injury of peroneal nerve at lower leg level, right leg S84.12 Injury of peroneal nerve at lower leg level, left leg S84.2 Injury of cutaneous sensory nerve at lower leg level S84.20 Injury of cutaneous sensory nerve at lower leg level, unspecified leg S84.21 Injury of cutaneous sensory nerve at lower leg level, right leg S84.22 Injury of cutaneous sensory nerve at lower leg level, left leg S84.8 Injury of other nerves at lower leg level S84.80 Injury of other nerves at lower leg level S84.801 Injury of other nerves at lower leg level, right leg S84.802 Injury of other nerves at lower leg level, left leg S84.809 Injury of other nerves at lower leg level, unspecified leg S84.9 Injury of unspecified nerve at lower leg level S84.90 Injury of unspecified nerve at lower leg level, unspecified leg S84.91 Injury of unspecified nerve at lower leg level, right leg
Search all 70,000+ ICD-10-CM codes →
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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