T24.622S — Corrosion of second degree of left knee, sequela
Is T24.622S billable?
Yes — T24.622S is billable for FY2027. T24.622S is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. T24.622S may be submitted for encounters from October 1, 2026 through September 30, 2027.
T24.622S at a glance
| Code | T24.622S |
|---|---|
| Description | Corrosion of second degree of left knee, sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "S" | sequela |
What does the 7th character "S" mean in T24.622S?
In T24.622S, the 7th character S means sequela. The 7th character is required for T24.622S to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T24.622S group to?
T24.622S sits in MDC 09 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 604Trauma to the Skin, Subcutaneous Tissue and Breast with MCCmedical
- 605Trauma to the Skin, Subcutaneous Tissue and Breast without MCCmedical
How is T24.622S listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T24.622, the nearest indexed parent of T24.622S. Use them to find the family, then select the specific code.
- Corrosion › knee › left › second degree (injury) (acid) (caustic) (chemical) (lime) (external) (internal)
Code first — inherited from T24.6
The underlying condition below must be sequenced before T24.622S. T24.622S 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 T24.622S to fully describe the condition. T24.622S 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 T24.622S to fully describe the condition. T24.622S is sequenced first.
Use additional code — inherited from T24.6
Report an additional code alongside T24.622S to fully describe the condition. T24.622S 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 T24.622S, but a patient may have both at the same time. When documentation supports it, T24.622S and the excluded code may both be reported.
Excludes2 — not included here — inherited from T24
The conditions below are not part of T24.622S, but a patient may have both at the same time. When documentation supports it, T24.622S and the excluded code may both be reported.
How long has T24.622S existed?
T24.622S 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.