T28.7XXD ICD-10-CM Code: Corrosion of other parts of alimentary tract, subsequent encounter
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Inpatient Payment Groups (MS-DRG)
MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.
- MS-DRG 949 — AFTERCARE WITH CC/MCC (MDC 23)
- MS-DRG 950 — AFTERCARE WITHOUT CC/MCC (MDC 23)
A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for T28.7XXD in the official ICD-10-CM tabular list.
Code First
Underlying conditions that must be sequenced before this code.
- (T51-T65) to identify chemical and intent
Use Additional Code
Supplementary codes the tabular list directs you to add.
- external cause code to identify the source and intent of the burn (X00-X19, X75-X77, X96-X98)
- external cause code to identify place (Y92)
Change history
No changes recorded for this code — unchanged since the FY2016 baseline of the change ledger.
Verify Before Coding
- Billable — reportable as written.
From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.
Contextual Map
Every relationship of T28.7XXD in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.
Hierarchy
- T28.7 — Corrosion of other parts of alimentary tract [Hierarchy]
Clinical classification (CCSR)
- INJ056 — Burns and corrosion, subsequent encounter [CCSR]
Potential MS-DRG
- DRG 949 — AFTERCARE WITH CC/MCC [MS-DRG]: “AFTERCARE WITH CC/MCC (MDC 23)”
- DRG 950 — AFTERCARE WITHOUT CC/MCC [MS-DRG]: “AFTERCARE WITHOUT CC/MCC (MDC 23)”
Nearest codes (40)
- T28 — Burn and corrosion of other internal organs [Sibling]
- T28.412D — Burn of left ear drum, subsequent encounter [Sibling]
- T28.412S — Burn of left ear drum, sequela [Sibling]
- T28.419 — Burn of unspecified ear drum [Sibling]
- T28.419A — Burn of unspecified ear drum, initial encounter [Sibling]
- T28.419D — Burn of unspecified ear drum, subsequent encounter [Sibling]
- T28.419S — Burn of unspecified ear drum, sequela [Sibling]
- T28.49 — Burn of other internal organ [Sibling]
- and 32 more
Relationships & Classification
Clinical classification (AHRQ CCSR):INJ056 — Burns and corrosion, subsequent encounter (default).
Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.
Potential MS-DRG Relationships (FY2026)
Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.
Named in the grouper logic of 2 MS-DRGs: DRG 949 (MDC 23), DRG 950 (MDC 23).
From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.
Frequently Asked Questions (FAQ) & Clinical Guidance
Does T28.7XXD require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category T28.
Nearest Codes in This Family
Official ICD-10-CM classifications closest to T28.7XXD in its code family, with their registry titles.
- T28.6XXA — Corrosion of esophagus, initial encounter
- T28.6XXD — Corrosion of esophagus, subsequent encounter
- T28.6XXS — Corrosion of esophagus, sequela
- T28.7 — Corrosion of other parts of alimentary tract
- T28.7XXA — Corrosion of other parts of alimentary tract, initial encounter
- T28.7XXS — Corrosion of other parts of alimentary tract, sequela
- T28.8 — Corrosion of internal genitourinary organs
- T28.8XXA — Corrosion of internal genitourinary organs, initial encounter
- T28.8XXD — Corrosion of internal genitourinary organs, subsequent encounter
- T28.8XXS — Corrosion of internal genitourinary organs, sequela