S91.301 is the authoritative medical code for Unspecified open wound, right foot. This classification is used in medical billing and clinical recording to specify the clinical criteria for unspecified open wound, right foot (ICD-10-CM S91.301), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.
Official Registry Overview & Definition
Unspecified open wound, right foot is a non-billable ICD-10-CM category code S91.301. A more specific billable subcode must be selected for claims submission. Excludes1 (not coded here): open fracture of ankle, foot and toes (S92.-with 7th character B); traumatic amputation of ankle and foot S98.-. Excludes2 (not included here): burns and corrosions T20-T32; fracture of ankle and malleolus S82.-; frostbite T33-T34; 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 S91.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for S91.301 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 ankle, foot and toes (S92.-with 7th character B)
- traumatic amputation of ankle and foot S98.-
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- burns and corrosions T20-T32
- fracture of ankle and malleolus S82.-
- frostbite T33-T34
- 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
Can S91.301 be billed directly?
No. S91.301 (Unspecified open wound, right foot) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Does S91.301 require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category S91.
What can't be coded together with S91.301?
Per official ICD-10-CM Excludes1 instructions, S91.301 must not be reported together with: open fracture of ankle, foot and toes (S92.-with 7th character B); traumatic amputation of ankle and foot (S98.-).
Can S91.301 be reported alongside related conditions?
Per official ICD-10-CM Excludes2 instructions, S91.301 and the following are not considered part of each other and may both be reported when both conditions are present: burns and corrosions (T20-T32); fracture of ankle and malleolus (S82.-); frostbite (T33-T34); insect bite or sting, venomous (T63.4).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to S91.301 in its code family, with their registry titles.
- S91 — Open wound of ankle, foot and toes
- S91.0 — Open wound of ankle
- S91.00 — Unspecified open wound of ankle
- S91.001 — Unspecified open wound, right ankle
- S91.001A — Unspecified open wound, right ankle, initial encounter
- S91.001D — Unspecified open wound, right ankle, subsequent encounter
- S91.001S — Unspecified open wound, right ankle, sequela
- S91.002 — Unspecified open wound, left ankle
- S91.002A — Unspecified open wound, left ankle, initial encounter
- S91.002D — Unspecified open wound, left ankle, subsequent encounter
View all 40 codes in the S91 family