ICD-10 I25.729
Billable / Specific HCC v28: 88 CCAtherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris
About ICD-10-CM I25.729
ICD-10-CM code I25.729 represents Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris. This is a billable/specific code in the Circulatory System chapter (block I25). The 2026 edition of ICD-10-CM I25.729 became effective on October 1, 2025.
Coding Tips for I25.729
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
I25.729 is a CMS-HCC v28 risk-adjustment code (category 88). To count for the patient Risk Adjustment Factor (RAF), document the diagnosis with MEAT language each calendar year: Monitored, Evaluated, Assessed, Treated. A diagnosis on the problem list alone does not satisfy CMS RADV audit standards. Include the diagnosis in the assessment with current status and current treatment plan.
I25.729 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.
Type 1 Excludes
Pure excludes, these codes can never be coded together with I25.729. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- unspecified angina pectoris without atherosclerosis of autologous artery coronary artery bypass graft(s) (I20.9)
Medicare Advantage HCC Impact
Capture this diagnosis annually for accurate risk adjustment. Missed HCC captures are the #1 revenue leak in Medicare Advantage risk programs.
Inpatient DRG Impact, CC
codes Atherosclerosis of autologous artery coronary artery bypass graft(s) with unspecified angina pectoris. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for I25.729
Local Coverage Determinations (LCDs) from CMS MACs that list I25.729 as a covered diagnosis.
Showing top 10 of 452 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I25.729.
2 Cigna
5 Medicare
CPT Codes Commonly Billed with I25.729
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- Q9950 CMS LCD: Billing and Coding: Echocardiography for Myocardial Perfusion CMS LCD
- 0439T CMS LCD: Billing and Coding: Echocardiography for Myocardial Perfusion CMS LCD
- 75574 CMS LCD: Billing and Coding: Coronary Computed Tomography Angiography (CCTA) CMS LCD
- 75573 CMS LCD: Billing and Coding: Coronary Computed Tomography Angiography (CCTA) CMS LCD
- 75572 CMS LCD: Billing and Coding: Coronary Computed Tomography Angiography (CCTA) CMS LCD
- 75571 CMS LCD: Billing and Coding: Coronary Computed Tomography Angiography (CCTA) CMS LCD
- 33928 CMS LCD: Billing and Coding: Artificial Hearts and Percutaneous Endovascular Cardiac Assist Procedures and Devices CMS LCD
- 33927 CMS LCD: Billing and Coding: Artificial Hearts and Percutaneous Endovascular Cardiac Assist Procedures and Devices CMS LCD
- 33929 CMS LCD: Billing and Coding: Artificial Hearts and Percutaneous Endovascular Cardiac Assist Procedures and Devices CMS LCD
Convert I25.729 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 |
|---|---|---|
| I25.729 | 4139 | 10112 |
| I25.729 | 41404 | 10111 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To I25.729
Other codes in section I20-I25 (Ischemic heart diseases).
ICD-10 I25.729, Billing FAQ
Is ICD-10 code I25.729 billable? +
Yes, I25.729 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What codes are Type 1 Excludes for I25.729? +
Type 1 Excludes (never code together with I25.729): unspecified angina pectoris without atherosclerosis of autologous artery coronary artery bypass graft(s) (I20.9)
Does I25.729 affect Medicare Advantage HCC risk adjustment? +
Yes. I25.729 maps to CMS-HCC v28 category 88. Capture this diagnosis annually for accurate Medicare Advantage risk score.
Is I25.729 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 I25.729? +
Procedures frequently paired with I25.729 include: Q9950, 0439T, 75574, 75573, 75572.
What ICD-9 codes does I25.729 map to? +
Per CMS GEMs, I25.729 maps to ICD-9 codes: 4139, 41404. 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 May 31, 2026.
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