ICD-10 I44.1
Billable / SpecificAtrioventricular block, second degree
About ICD-10-CM I44.1
ICD-10-CM code I44.1 represents Atrioventricular block, second degree. This is a billable/specific code in the Circulatory System chapter (block I44). The 2026 edition of ICD-10-CM I44.1 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under I44.1. Per CMS ICD-10-CM Tabular 2026.
- Atrioventricular block, type I and II
- Möbitz block, type I and II
- Second degree block, type I and II
- Wenckebach's block
Medicare LCD Coverage for I44.1
Local Coverage Determinations (LCDs) from CMS MACs that list I44.1 as a covered diagnosis.
Showing top 10 of 537 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I44.1.
1 Cigna
5 Medicare
CPT Codes Commonly Billed with I44.1
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 93000 EKG 12-lead — tachycardia, bradycardia, palpitations, HTN, CAD, AFib, arrhythmia, chest pain, syncope, cardiomyopathy, AV block, bundle branch block, SVT, VT, diabetes screening, abnormal EKG Cardiology
- 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
Convert I44.1 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 |
|---|---|---|
| I44.1 | 42612 | 10000 |
| I44.1 | 42613 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To I44.1
Other codes in section I30-I5A (Other forms of heart disease).
ICD-10 I44.1, Billing FAQ
Is ICD-10 code I44.1 billable? +
Yes, I44.1 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 I44.1? +
ICD-10 I44.1 includes: Atrioventricular block, type I and II; Möbitz block, type I and II; Second degree block, type I and II, and 1 more clinical synonyms.
What CPT codes are commonly billed with I44.1? +
Procedures frequently paired with I44.1 include: 93000, 33208, 33206, 33207, 93281.
What ICD-9 codes does I44.1 map to? +
Per CMS GEMs, I44.1 maps to ICD-9 codes: 42612, 42613. 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 17, 2026.
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