T24.73 — Corrosion of third degree of lower leg
Is T24.73 billable?
No — T24.73 is a non-billable header code. T24.73 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 9 billable codes beneath T24.73.
Billable codes under this header
- T24.731ACorrosion of third degree of right lower leg, initial encounter
- T24.731DCorrosion of third degree of right lower leg, subsequent encounter
- T24.731SCorrosion of third degree of right lower leg, sequela
- T24.732ACorrosion of third degree of left lower leg, initial encounter
- T24.732DCorrosion of third degree of left lower leg, subsequent encounter
- T24.732SCorrosion of third degree of left lower leg, sequela
- T24.739ACorrosion of third degree of unspecified lower leg, initial encounter
- T24.739DCorrosion of third degree of unspecified lower leg, subsequent encounter
- T24.739SCorrosion of third degree of unspecified lower leg, sequela
T24.73 at a glance
| Code | T24.73 |
|---|---|
| Description | Corrosion of third degree of lower leg |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Code first — inherited from T24.7
The underlying condition below must be sequenced before T24.73. T24.73 describes a manifestation and cannot be the principal or first-listed diagnosis.
- (T51-T65) to identify chemical and intent
Use additional code — inherited from Chapter 19
Report an additional code alongside T24.73 to fully describe the condition. T24.73 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T20-T25
Report an additional code alongside T24.73 to fully describe the condition. T24.73 is sequenced first.
Use additional code — inherited from T24.7
Report an additional code alongside T24.73 to fully describe the condition. T24.73 is sequenced first.
- external cause code to identify place (Y92)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T24.73, but a patient may have both at the same time. When documentation supports it, T24.73 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T24
The conditions below are not part of T24.73, but a patient may have both at the same time. When documentation supports it, T24.73 and the excluded code may both be reported.
What codes fall under T24.73? (3)
How long has T24.73 existed?
T24.73 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the T24.7 family? (4)
- T24.70Corrosion of third degree of unspecified site of lower limb, except ankle and footnot billable
- T24.71Corrosion of third degree of thighnot billable
- T24.72Corrosion of third degree of kneenot billable
- T24.79Corrosion of third degree of multiple sites of lower limb, except ankle and footnot billable