T28.99 Corrosions of other internal organs

✓ Billable ICD-10-CM 2026
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The ICD-10-CM code for Corrosions of other internal organs is T28.99 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
T26-T28: Burns and corrosions confined to eye and internal organs (T26-T28)
Category T28
23 codes (18 billable)
FY2026 Status
Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to T28.99:

  • Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) › internal organ (s) › specified organ NEC

Official Coding Guidelines

Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.2
Do not assign injury codes for iatrogenic injuries; code complication

3) Iatrogenic injuries Injury codes from Chapter 19 should not be assigned for injuries that occur during, or as a result of, a medical intervention. Assign the appropriate complication code(s).

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.3

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

T28 Burn and corrosion of other internal organs

Related Codes in T28

T28 Burn and corrosion of other internal organs T28.0 Burn of mouth and pharynx T28.1 Burn of esophagus T28.2 Burn of other parts of alimentary tract T28.3 Burn of internal genitourinary organs T28.4 Burns of other and unspecified internal organs T28.40 Burn of unspecified internal organ T28.41 Burn of ear drum T28.411 Burn of right ear drum T28.412 Burn of left ear drum T28.419 Burn of unspecified ear drum T28.49 Burn of other internal organ T28.5 Corrosion of mouth and pharynx T28.6 Corrosion of esophagus T28.7 Corrosion of other parts of alimentary tract T28.8 Corrosion of internal genitourinary organs T28.9 Corrosions of other and unspecified internal organs T28.90 Corrosions of unspecified internal organs T28.91 Corrosions of ear drum T28.911 Corrosions of right ear drum
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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