T24.139A Burn of first degree of unspecified lower leg, initial encounter

Billable ICD-10-CM code, FY2026.

Built from T24.139 with 7th character A (initial encounter).

Applies from T24 Burn and corrosion of lower limb, except ankle and foot

Excludes2 (not included here)

• burn and corrosion of ankle and foot (T25.-)
• burn and corrosion of hip region (T21.-)

7th character note

• The appropriate 7th character is to be added to each code from category T24

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from T24.1 Burn of first degree of lower limb, except ankle and foot

Use additional code

• external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92)

Code annotations containing back-references to T24.139A

Back-references to T24

• Type 1 Excludes: T66 Radiation sickness, unspecified ("burns (T20-T31)")
• Type 2 Excludes: T67 Effects of heat and light ("burns (T20-T31)")
• Type 2 Excludes: T75 Other and unspecified effects of other external causes ("burns (electric) (T20-T31)")

Diagnosis Index entries for T24.139A

• Burn (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal) › calf › first degree

Nearby codes

• T24.132 Burn of first degree of left lower leg
• T24.132A Burn of first degree of left lower leg, initial encounter
• T24.132D Burn of first degree of left lower leg, subsequent encounter
• T24.132S Burn of first degree of left lower leg, sequela
• T24.139 Burn of first degree of unspecified lower leg
• T24.139A Burn of first degree of unspecified lower leg, initial encounter (this code)
• T24.139D Burn of first degree of unspecified lower leg, subsequent encounter
• T24.139S Burn of first degree of unspecified lower leg, sequela
• T24.19 Burn of first degree of multiple sites of lower limb, except ankle and foot
• T24.191 Burn of first degree of multiple sites of right lower limb, except ankle and foot
• T24.191A Burn of first degree of multiple sites of right lower limb, except ankle and foot, initial encounter