S84.12XS is the authoritative medical code for Injury of peroneal nerve at lower leg level, left leg, sequela. This classification is used in medical billing and clinical recording to specify the clinical criteria for injury of peroneal nerve at lower leg level, left leg, sequela (ICD-10-CM S84.12XS), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Injury of peroneal nerve at lower leg level, left leg, sequela is a billable ICD-10-CM diagnosis code S84.12S. Excludes2 (not included here): 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: any associated open wound S81.-. 7th character: The appropriate 7th character is to be added to each code from category S84.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for S84.12XS 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 S84.12XS require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category S84.
Can S84.12XS be reported alongside related conditions?
Per Excludes2 instructions, S84.12XS and the following may both be reported 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).
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as S84.12XS, with their registry titles.
- S84 — Injury of nerves at lower leg level
- S84.0 — Injury of tibial nerve at lower leg level
- S84.00 — Injury of tibial nerve at lower leg level, unspecified leg
- S84.00XA — Injury of tibial nerve at lower leg level, unspecified leg, initial encounter
- S84.00XD — Injury of tibial nerve at lower leg level, unspecified leg, subsequent encounter
- S84.00XS — Injury of tibial nerve at lower leg level, unspecified leg, sequela
- S84.01 — Injury of tibial nerve at lower leg level, right leg
- S84.01XA — Injury of tibial nerve at lower leg level, right leg, initial encounter
- S84.01XD — Injury of tibial nerve at lower leg level, right leg, subsequent encounter
- S84.01XS — Injury of tibial nerve at lower leg level, right leg, sequela
- S84.02 — Injury of tibial nerve at lower leg level, left leg
- S84.02XA — Injury of tibial nerve at lower leg level, left leg, initial encounter
- S84.02XD — Injury of tibial nerve at lower leg level, left leg, subsequent encounter
- S84.02XS — Injury of tibial nerve at lower leg level, left leg, sequela
- S84.1 — Injury of peroneal nerve at lower leg level
- S84.10 — Injury of peroneal nerve at lower leg level, unspecified leg
- S84.10XA — Injury of peroneal nerve at lower leg level, unspecified leg, initial encounter
- S84.10XD — Injury of peroneal nerve at lower leg level, unspecified leg, subsequent encounter
- S84.10XS — Injury of peroneal nerve at lower leg level, unspecified leg, sequela
- S84.11 — Injury of peroneal nerve at lower leg level, right leg
- 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
- S84.12XD — Injury of peroneal nerve at lower leg level, left leg, subsequent encounter
- 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
- S84.20XS — Injury of cutaneous sensory nerve at lower leg level, unspecified leg, sequela
- S84.21 — Injury of cutaneous sensory nerve at lower leg level, right leg
- S84.21XA — Injury of cutaneous sensory nerve at lower leg level, right leg, initial encounter
- S84.21XD — Injury of cutaneous sensory nerve at lower leg level, right leg, subsequent encounter
- S84.21XS — Injury of cutaneous sensory nerve at lower leg level, right leg, sequela
- S84.22 — Injury of cutaneous sensory nerve at lower leg level, left leg
- S84.22XA — Injury of cutaneous sensory nerve at lower leg level, left leg, initial encounter
- S84.22XD — Injury of cutaneous sensory nerve at lower leg level, left leg, subsequent encounter
- S84.22XS — Injury of cutaneous sensory nerve at lower leg level, left leg, sequela
- S84.8 — Injury of other nerves at lower leg level
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: