S81.002D is the authoritative medical code for Unspecified open wound, left knee, subsequent encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for unspecified open wound, left knee, subsequent encounter (ICD-10-CM S81.002D), 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
Unspecified open wound, left knee, subsequent encounter is a billable ICD-10-CM diagnosis code S81.002D. Excludes1 (not coded here): open fracture of knee and lower leg S82.-; traumatic amputation of lower leg S88.-. Excludes2 (not included here): open wound of ankle and foot S91.-; 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 wound infection. 7th character: The appropriate 7th character is to be added to each code from category S81.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for S81.002D in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- open fracture of knee and lower leg S82.-
- traumatic amputation of lower leg S88.-
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- open wound of ankle and foot S91.-
- 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 wound infection
Frequently Asked Questions (FAQ) & Clinical Guidance
Does S81.002D require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category S81.
What can't be coded together with S81.002D?
Per official ICD-10-CM Excludes1 instructions, S81.002D must not be reported together with: open fracture of knee and lower leg (S82.-); traumatic amputation of lower leg (S88.-).
Can S81.002D be reported alongside related conditions?
Per official ICD-10-CM Excludes2 instructions, S81.002D and the following are not considered part of each other and may both be reported when both conditions are present: open wound of ankle and foot (S91.-); burns and corrosions (T20-T32); frostbite (T33-T34); injuries of ankle and foot, except fracture of ankle and malleolus (S90-S99).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to S81.002D in its code family, with their registry titles.
- S81 — Open wound of knee and lower leg
- S81.0 — Open wound of knee
- S81.00 — Unspecified open wound of knee
- S81.001 — Unspecified open wound, right knee
- S81.001A — Unspecified open wound, right knee, initial encounter
- S81.001D — Unspecified open wound, right knee, subsequent encounter
- S81.001S — Unspecified open wound, right knee, sequela
- S81.002 — Unspecified open wound, left knee
- S81.002A — Unspecified open wound, left knee, initial encounter
- S81.002S — Unspecified open wound, left knee, sequela
View all 40 codes in the S81 family