ICD-10 I20.2
Billable / Specific HCC v28: 88 CCRefractory angina pectoris
About ICD-10-CM I20.2
ICD-10-CM code I20.2 represents Refractory angina pectoris. This is a billable/specific code in the Circulatory System chapter (block I20). The 2026 edition of ICD-10-CM I20.2 became effective on October 1, 2025.
Coding Tips for I20.2
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
I20.2 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.
I20.2 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.
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 Refractory angina pectoris. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for I20.2
Local Coverage Determinations (LCDs) from CMS MACs that list I20.2 as a covered diagnosis.
Showing top 10 of 98 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I20.2.
5 Medicare
1 Aetna
CPT Codes Commonly Billed with I20.2
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 83880 CMS LCD: Billing and Coding: B-type Natriuretic Peptide (BNP) Testing CMS LCD
- 78431 CMS LCD: Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing CMS LCD
- 78492 CMS LCD: Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing CMS LCD
- 75563 CMS LCD: Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing CMS LCD
- 75559 CMS LCD: Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing CMS LCD
- 0742T CMS LCD: Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing CMS LCD
- 78434 CMS LCD: Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing CMS LCD
- 78430 CMS LCD: Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing CMS LCD
- 78491 CMS LCD: Billing and Coding: Cardiology Non-emergent Outpatient Stress Testing CMS LCD
- 93798 CMS LCD: Billing and Coding: Frequency and Duration for Cardiac Rehabilitation and Intensive Cardiac Rehabilitation CMS LCD
Codes Adjacent To I20.2
Other codes in section I20-I25 (Ischemic heart diseases).
ICD-10 I20.2, Billing FAQ
Is ICD-10 code I20.2 billable? +
Yes, I20.2 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
Does I20.2 affect Medicare Advantage HCC risk adjustment? +
Yes. I20.2 maps to CMS-HCC v28 category 88. Capture this diagnosis annually for accurate Medicare Advantage risk score.
Is I20.2 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 I20.2? +
Procedures frequently paired with I20.2 include: 83880, 78431, 78492, 75563, 75559.
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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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