T24.00 is the authoritative medical code for Burn of unspecified degree of unspecified site of lower limb, except ankle and foot. This classification is used in medical billing and clinical recording to specify the clinical criteria for burn of unspecified degree of unspecified site of lower limb, except ankle and foot (ICD-10-CM T24.00), 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
Burn of unspecified degree of unspecified site of lower limb, except ankle and foot is a non-billable ICD-10-CM category code T24.00. A more specific billable subcode must be selected for claims submission. Includes: burns and corrosions of first degree erythema; burns and corrosions of second degree blistersepidermal loss; burns and corrosions of third degree deep necrosis of underlying tissue full- thickness skin loss. Excludes2 (not included here): burn and corrosion of ankle and foot T25.-; burn and corrosion of hip region T21.-. Use additional code: external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92); code from category T31 or T32 to identify extent of body surface involved. 7th character: The appropriate 7th character is to be added to each code from category T24.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for T24.00 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- burns and corrosions of first degree erythema
- burns and corrosions of second degree blistersepidermal loss
- burns and corrosions of third degree deep necrosis of underlying tissue full- thickness skin loss
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- burn and corrosion of ankle and foot T25.-
- burn and corrosion of hip region T21.-
Use Additional Code
Supplementary codes the tabular list directs you to add.
- external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92)
- code from category T31 or T32 to identify extent of body surface involved
Frequently Asked Questions (FAQ) & Clinical Guidance
Can T24.00 be billed directly?
No. T24.00 (Burn of unspecified degree of unspecified site of lower limb, except ankle and foot) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.
Does T24.00 require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category T24.
Can T24.00 be reported alongside related conditions?
Per Excludes2 instructions, T24.00 and the following may both be reported when both are present: burn and corrosion of ankle and foot (T25.-); burn and corrosion of hip region (T21.-).
Is an additional code needed with T24.00?
Use additional code(s) to specify: external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92); code from category T31 or T32 to identify extent of body surface involved.
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as T24.00, with their registry titles.
- T24 — Burn and corrosion of lower limb, except ankle and foot
- T24.0 — Burn of unspecified degree of lower limb, except ankle and foot
- T24.001 — Burn of unspecified degree of unspecified site of right lower limb, except ankle and foot
- T24.001A — Burn of unspecified degree of unspecified site of right lower limb, except ankle and foot, initial encounter
- T24.001D — Burn of unspecified degree of unspecified site of right lower limb, except ankle and foot, subsequent encounter
- T24.001S — Burn of unspecified degree of unspecified site of right lower limb, except ankle and foot, sequela
- T24.002 — Burn of unspecified degree of unspecified site of left lower limb, except ankle and foot
- T24.002A — Burn of unspecified degree of unspecified site of left lower limb, except ankle and foot, initial encounter
- T24.002D — Burn of unspecified degree of unspecified site of left lower limb, except ankle and foot, subsequent encounter
- T24.002S — Burn of unspecified degree of unspecified site of left lower limb, except ankle and foot, sequela
- T24.009 — Burn of unspecified degree of unspecified site of unspecified lower limb, except ankle and foot
- T24.009A — Burn of unspecified degree of unspecified site of unspecified lower limb, except ankle and foot, initial encounter
- T24.009D — Burn of unspecified degree of unspecified site of unspecified lower limb, except ankle and foot, subsequent encounter
- T24.009S — Burn of unspecified degree of unspecified site of unspecified lower limb, except ankle and foot, sequela
- T24.01 — Burn of unspecified degree of thigh
- T24.011 — Burn of unspecified degree of right thigh
- T24.011A — Burn of unspecified degree of right thigh, initial encounter
- T24.011D — Burn of unspecified degree of right thigh, subsequent encounter
- T24.011S — Burn of unspecified degree of right thigh, sequela
- T24.012 — Burn of unspecified degree of left thigh
- T24.012A — Burn of unspecified degree of left thigh, initial encounter
- T24.012D — Burn of unspecified degree of left thigh, subsequent encounter
- T24.012S — Burn of unspecified degree of left thigh, sequela
- T24.019 — Burn of unspecified degree of unspecified thigh
- T24.019A — Burn of unspecified degree of unspecified thigh, initial encounter
- T24.019D — Burn of unspecified degree of unspecified thigh, subsequent encounter
- T24.019S — Burn of unspecified degree of unspecified thigh, sequela
- T24.02 — Burn of unspecified degree of knee
- T24.021 — Burn of unspecified degree of right knee
- T24.021A — Burn of unspecified degree of right knee, initial encounter
- T24.021D — Burn of unspecified degree of right knee, subsequent encounter
- T24.021S — Burn of unspecified degree of right knee, sequela
- T24.022 — Burn of unspecified degree of left knee
- T24.022A — Burn of unspecified degree of left knee, initial encounter
- T24.022D — Burn of unspecified degree of left knee, subsequent encounter
- T24.022S — Burn of unspecified degree of left knee, sequela
- T24.029 — Burn of unspecified degree of unspecified knee
- T24.029A — Burn of unspecified degree of unspecified knee, initial encounter
- T24.029D — Burn of unspecified degree of unspecified knee, subsequent encounter
- T24.029S — Burn of unspecified degree of unspecified knee, sequela
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 T20.00
Burn of unspecified degree of head, face, and neck, unspecified site
ICD Code T22.00
Burn of unspecified degree of shoulder and upper limb, except wrist and hand, unspecified site