ICD-10 I25.812
Billable / Specific CCAtherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris
About ICD-10-CM I25.812
ICD-10-CM code I25.812 represents Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris. This is a billable/specific code in the Circulatory System chapter (block I25). The 2026 edition of ICD-10-CM I25.812 became effective on October 1, 2025.
Coding Tips for I25.812
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
I25.812 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under I25.812. Per CMS ICD-10-CM Tabular 2026.
- Atherosclerosis of bypass graft of transplanted heart NOS
Type 1 Excludes
Pure excludes, these codes can never be coded together with I25.812. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- atherosclerosis of bypass graft of transplanted heart with angina pectoris (I25.76)
Inpatient DRG Impact, CC
codes Atherosclerosis of bypass graft of coronary artery of transplanted heart without angina pectoris. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for I25.812
Local Coverage Determinations (LCDs) from CMS MACs that list I25.812 as a covered diagnosis.
Showing top 10 of 553 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I25.812.
1 Aetna
2 Cigna
5 Medicare
CPT Codes Commonly Billed with I25.812
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 92928 PCI with stent — CAD native vessel, unstable angina, STEMI/NSTEMI all arteries, ischemic cardiomyopathy, bypass graft disease Interventional Cardiology
- 93281 CMS LCD: Billing and Coding: Cardiac Rhythm Device Evaluation CMS LCD
- 93280 CMS LCD: Billing and Coding: Cardiac Rhythm Device Evaluation CMS LCD
- 93296 CMS LCD: Billing and Coding: Cardiac Rhythm Device Evaluation CMS LCD
- 93279 CMS LCD: Billing and Coding: Cardiac Rhythm Device Evaluation CMS LCD
- 93283 CMS LCD: Billing and Coding: Cardiac Rhythm Device Evaluation CMS LCD
- 93261 CMS LCD: Billing and Coding: Cardiac Rhythm Device Evaluation CMS LCD
- 93288 CMS LCD: Billing and Coding: Cardiac Rhythm Device Evaluation CMS LCD
- 93282 CMS LCD: Billing and Coding: Cardiac Rhythm Device Evaluation CMS LCD
- 93724 CMS LCD: Billing and Coding: Cardiac Rhythm Device Evaluation CMS LCD
Convert I25.812 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| I25.812 | 41407 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To I25.812
Other codes in section I20-I25 (Ischemic heart diseases).
ICD-10 I25.812, Billing FAQ
Is ICD-10 code I25.812 billable? +
Yes, I25.812 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to I25.812? +
ICD-10 I25.812 includes: Atherosclerosis of bypass graft of transplanted heart NOS.
What codes are Type 1 Excludes for I25.812? +
Type 1 Excludes (never code together with I25.812): atherosclerosis of bypass graft of transplanted heart with angina pectoris (I25.76)
Is I25.812 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What CPT codes are commonly billed with I25.812? +
Procedures frequently paired with I25.812 include: 92928, 93281, 93280, 93296, 93279.
What ICD-9 codes does I25.812 map to? +
Per CMS GEMs, I25.812 maps to ICD-9 codes: 41407. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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