T28.7XXS — Corrosion of other parts of alimentary tract, sequela
Is T28.7XXS billable?
Yes — T28.7XXS is billable for FY2027. T28.7XXS is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. T28.7XXS may be submitted for encounters from October 1, 2026 through September 30, 2027.
T28.7XXS at a glance
| Code | T28.7XXS |
|---|---|
| Description | Corrosion of other parts of alimentary tract, 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 T28.7XXS?
In T28.7XXS, the 7th character S means sequela. The 7th character is required for T28.7XXS to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T28.7XXS group to?
T28.7XXS 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 T28.7XXS listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T28.7, the nearest indexed parent of T28.7XXS. Use them to find the family, then select the specific code.
- Corrosion › alimentary tract NEC (injury) (acid) (caustic) (chemical) (lime) (external) (internal)
- Corrosion › colon (injury) (acid) (caustic) (chemical) (lime) (external) (internal)
- Corrosion › gastrointestinal tract NEC (injury) (acid) (caustic) (chemical) (lime) (external) (internal)
- Corrosion › intestine (injury) (acid) (caustic) (chemical) (lime) (external) (internal)
- Corrosion › rectum (injury) (acid) (caustic) (chemical) (lime) (external) (internal)
- Corrosion › stomach (injury) (acid) (caustic) (chemical) (lime) (external) (internal)
- Burn › gastrointestinal tract NEC › from swallowing caustic or corrosive substance (electricity) (flame) (hot gas, liquid or hot object) (radiation) (steam) (thermal)
- Corrosion › internal organ › alimentary tract (injury) (acid) (caustic) (chemical) (lime) (external) (internal)
Code first
The underlying condition below must be sequenced before T28.7XXS. T28.7XXS describes a manifestation and cannot be the principal or first-listed diagnosis.
- (T51-T65) to identify chemical and intent
Code first — inherited from T28.7
The underlying condition below must be sequenced before T28.7XXS. T28.7XXS 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 T28.7XXS to fully describe the condition. T28.7XXS is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T28
Report an additional code alongside T28.7XXS to fully describe the condition. T28.7XXS is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T28.7XXS, but a patient may have both at the same time. When documentation supports it, T28.7XXS and the excluded code may both be reported.
How long has T28.7XXS existed?
T28.7XXS 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.