T24.039A Burn of unspecified degree of unspecified lower leg, initial encounter

ICD-10-CM T24.039A: Burn of unspecified degree of unspecified lower leg, initial encounter

ICD-10-CM code T24.039A identifies an initial encounter for a burn of unspecified degree on an unspecified lower leg. The terminology is active and classifies the concept as an injury or poisoning. General clinical sources establish that burn severity depends on factors like affected area and duration, but do not define this specific code. 1 2

Plain-language overview

The label for T24.039A denotes a burn injury to the lower leg where both the severity and the specific side are not specified, captured during the initial encounter. 1

What this code represents

T24.039A is an active ICD-10-CM terminology concept with a semantic type of Injury or Poisoning, and it has narrower concepts within the terminology hierarchy. 1

The parent concept for T24.039A is T24.039, which represents a burn of unspecified degree of an unspecified lower leg without the encounter specification. 1

Coding details

Related codes distinguish laterality and encounters, including T24.031A for the right lower leg and T24.032A for the left lower leg during initial encounters. 4

The code tree provides subsequent encounter and sequela variations for unspecified lower leg burns, specifically T24.039D and T24.039S, to differentiate phases of care. 4

Documentation considerations

Accurate classification is essential for the proper assessment and treatment of burn patients, and burn severity depends on factors such as the affected area and duration of contact. 2

Clinical context

Burn severity depends on factors such as the affected area, duration of contact, and the patient’s preexisting health conditions, which guide clinical assessment. 2

What the sources add

While the terminology record defines the code as an injury, general clinical literature adds that burn injuries can involve direct contact with heat, electric current, radiation, or chemical agents. 1 3

The terminology record establishes the official code definition, whereas the code tree provides operational context by showing adjacent codes for right, left, subsequent, and sequela encounters. 1 4

Sources

1. ICD-10-CM T24.039A terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-27.
3. Burns: MedlinePlus Medical Encyclopedia — medlineplus.gov; accessed 2026-07-27.
4. ICD-10-CM 2024 | T24.03 - Burn of unspecified degree of lower leg — unboundmedicine.com; accessed 2026-07-27.