ICD-10 I47.9
Billable / Specific HCC v28: 96Paroxysmal tachycardia, unspecified
About ICD-10-CM I47.9
ICD-10-CM code I47.9 represents Paroxysmal tachycardia, unspecified. This is a billable/specific code in the Circulatory System chapter (block I47). The 2026 edition of ICD-10-CM I47.9 became effective on October 1, 2025.
Coding Tips for I47.9
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
I47.9 is a CMS-HCC v28 risk-adjustment code (category 96). 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.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under I47.9. Per CMS ICD-10-CM Tabular 2026.
- Bouveret (-Hoffman) syndrome
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.
Medicare LCD Coverage for I47.9
Local Coverage Determinations (LCDs) from CMS MACs that list I47.9 as a covered diagnosis.
Showing top 10 of 483 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I47.9.
1 Aetna
2 Cigna
5 Medicare
CPT Codes Commonly Billed with I47.9
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 33208 CMS LCD: Billing and Coding: Single Chamber and Dual Chamber Permanent Cardiac Pacemakers � Coding and Billing CMS LCD
- 33206 CMS LCD: Billing and Coding: Single Chamber and Dual Chamber Permanent Cardiac Pacemakers � Coding and Billing CMS LCD
- 33207 CMS LCD: Billing and Coding: Single Chamber and Dual Chamber Permanent Cardiac Pacemakers � Coding and Billing CMS LCD
- 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
Convert I47.9 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 |
|---|---|---|
| I47.9 | 4272 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To I47.9
Other codes in section I30-I5A (Other forms of heart disease).
ICD-10 I47.9, Billing FAQ
Is ICD-10 code I47.9 billable? +
Yes, I47.9 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 I47.9? +
ICD-10 I47.9 includes: Bouveret (-Hoffman) syndrome.
Does I47.9 affect Medicare Advantage HCC risk adjustment? +
Yes. I47.9 maps to CMS-HCC v28 category 96. Capture this diagnosis annually for accurate Medicare Advantage risk score.
What CPT codes are commonly billed with I47.9? +
Procedures frequently paired with I47.9 include: 33208, 33206, 33207, 93281, 93280.
What ICD-9 codes does I47.9 map to? +
Per CMS GEMs, I47.9 maps to ICD-9 codes: 4272. 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 July 16, 2026.
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