S80.00A is the authoritative medical code for Contusion of unspecified knee, initial encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for contusion of unspecified knee, initial encounter (ICD-10-CM S80.00A), 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
Contusion of unspecified knee, initial encounter is a billable ICD-10-CM diagnosis code S80.00A. Excludes2 (not included here): superficial injury of ankle and foot S90.-; 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. 7th character: The appropriate 7th character is to be added to each code from category S80.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for S80.00A 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.
- superficial injury of ankle and foot S90.-
- 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
Frequently Asked Questions (FAQ) & Clinical Guidance
Does S80.00A require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category S80.
Can S80.00A be reported alongside related conditions?
Per Excludes2 instructions, S80.00A and the following may both be reported when both are present: superficial injury of ankle and foot (S90.-); 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 S80.00A, with their registry titles.
- S80 — Superficial injury of knee and lower leg
- S80-S89 — Injuries to the knee and lower leg (S80-S89)
- S80.0 — Contusion of knee
- S80.00 — Contusion of unspecified knee
- S80.00D — Contusion of unspecified knee, subsequent encounter
- S80.00S — Contusion of unspecified knee, sequela
- S80.00XA — Contusion of unspecified knee, initial encounter
- S80.00XD — Contusion of unspecified knee, subsequent encounter
- S80.00XS — Contusion of unspecified knee, sequela
- S80.01 — Contusion of right knee
- S80.01A — Contusion of right knee, initial encounter
- S80.01D — Contusion of right knee, subsequent encounter
- S80.01S — Contusion of right knee, sequela
- S80.01XA — Contusion of right knee, initial encounter
- S80.01XD — Contusion of right knee, subsequent encounter
- S80.01XS — Contusion of right knee, sequela
- S80.02 — Contusion of left knee
- S80.02A — Contusion of left knee, initial encounter
- S80.02D — Contusion of left knee, subsequent encounter
- S80.02S — Contusion of left knee, sequela
- S80.02XA — Contusion of left knee, initial encounter
- S80.02XD — Contusion of left knee, subsequent encounter
- S80.02XS — Contusion of left knee, sequela
- S80.1 — Contusion of lower leg
- S80.10 — Contusion of unspecified lower leg
- S80.10A — Contusion of unspecified lower leg, initial encounter
- S80.10D — Contusion of unspecified lower leg, subsequent encounter
- S80.10S — Contusion of unspecified lower leg, sequela
- S80.10XA — Contusion of unspecified lower leg, initial encounter
- S80.10XD — Contusion of unspecified lower leg, subsequent encounter
- S80.10XS — Contusion of unspecified lower leg, sequela
- S80.11 — Contusion of right lower leg
- S80.11A — Contusion of right lower leg, initial encounter
- S80.11D — Contusion of right lower leg, subsequent encounter
- S80.11S — Contusion of right lower leg, sequela
- S80.11XA — Contusion of right lower leg, initial encounter
- S80.11XD — Contusion of right lower leg, subsequent encounter
- S80.11XS — Contusion of right lower leg, sequela
- S80.12 — Contusion of left lower leg
- S80.12A — Contusion of left lower leg, initial encounter
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:
ICD Code S84.00A
Injury of tibial nerve at lower leg level, unspecified leg, initial encounter