S84.12XD ICD-10-CM Code: Injury of peroneal nerve at lower leg level, left leg, subsequent encounter
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Inpatient Payment Groups (MS-DRG)
MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.
- MS-DRG 949 — AFTERCARE WITH CC/MCC (MDC 23)
- MS-DRG 950 — AFTERCARE WITHOUT CC/MCC (MDC 23)
A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.
Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for S84.12XD in the official ICD-10-CM tabular list.
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- injury of nerves at ankle and foot level (S94.-)
- burns and corrosions (T20-T32)
- frostbite (T33-T34)
- injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99)
- insect bite or sting, venomous (T63.4)
Code Also
Additional codes that may be required to fully describe the encounter.
- any associated open wound (S81.-)
Frequently Asked Questions (FAQ) & Clinical Guidance
Does S84.12XD require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category S84.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to S84.12XD in its code family, with their registry titles.
- S84.11XA — Injury of peroneal nerve at lower leg level, right leg, initial encounter
- S84.11XD — Injury of peroneal nerve at lower leg level, right leg, subsequent encounter
- S84.11XS — Injury of peroneal nerve at lower leg level, right leg, sequela
- S84.12 — Injury of peroneal nerve at lower leg level, left leg
- S84.12XA — Injury of peroneal nerve at lower leg level, left leg, initial encounter
- S84.12XS — Injury of peroneal nerve at lower leg level, left leg, sequela
- S84.2 — Injury of cutaneous sensory nerve at lower leg level
- S84.20 — Injury of cutaneous sensory nerve at lower leg level, unspecified leg
- S84.20XA — Injury of cutaneous sensory nerve at lower leg level, unspecified leg, initial encounter
- S84.20XD — Injury of cutaneous sensory nerve at lower leg level, unspecified leg, subsequent encounter