T24.40 — Corrosion of unspecified degree of unspecified site of lower limb, except ankle and foot
Is T24.40 billable?
No — T24.40 is a non-billable header code. T24.40 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 T24.40.
Billable codes under this header
- T24.401ACorrosion of unspecified degree of unspecified site of right lower limb, except ankle and foot, initial encounter
- T24.401DCorrosion of unspecified degree of unspecified site of right lower limb, except ankle and foot, subsequent encounter
- T24.401SCorrosion of unspecified degree of unspecified site of right lower limb, except ankle and foot, sequela
- T24.402ACorrosion of unspecified degree of unspecified site of left lower limb, except ankle and foot, initial encounter
- T24.402DCorrosion of unspecified degree of unspecified site of left lower limb, except ankle and foot, subsequent encounter
- T24.402SCorrosion of unspecified degree of unspecified site of left lower limb, except ankle and foot, sequela
- T24.409ACorrosion of unspecified degree of unspecified site of unspecified lower limb, except ankle and foot, initial encounter
- T24.409DCorrosion of unspecified degree of unspecified site of unspecified lower limb, except ankle and foot, subsequent encounter
- T24.409SCorrosion of unspecified degree of unspecified site of unspecified lower limb, except ankle and foot, sequela
T24.40 at a glance
| Code | T24.40 |
|---|---|
| Description | Corrosion of unspecified degree of unspecified site of lower limb, except ankle and foot |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Code first — inherited from T24.4
The underlying condition below must be sequenced before T24.40. T24.40 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 T24.40 to fully describe the condition. T24.40 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 T24.40 to fully describe the condition. T24.40 is sequenced first.
Use additional code — inherited from T24.4
Report an additional code alongside T24.40 to fully describe the condition. T24.40 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 T24.40, but a patient may have both at the same time. When documentation supports it, T24.40 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T24
The conditions below are not part of T24.40, but a patient may have both at the same time. When documentation supports it, T24.40 and the excluded code may both be reported.
What codes fall under T24.40? (3)
- T24.401Corrosion of unspecified degree of unspecified site of right lower limb, except ankle and footnot billable
- T24.402Corrosion of unspecified degree of unspecified site of left lower limb, except ankle and footnot billable
- T24.409Corrosion of unspecified degree of unspecified site of unspecified lower limb, except ankle and footnot billable
How long has T24.40 existed?
T24.40 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.