ICD-10 I44.0
Billable / SpecificAtrioventricular block, first degree
About ICD-10-CM I44.0
ICD-10-CM code I44.0 represents Atrioventricular block, first degree. This is a billable/specific code in the Circulatory System chapter (block I44). The 2026 edition of ICD-10-CM I44.0 became effective on October 1, 2025.
Medicare LCD Coverage for I44.0
Local Coverage Determinations (LCDs) from CMS MACs that list I44.0 as a covered diagnosis.
Showing top 10 of 394 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I44.0.
2 Aetna
5 Medicare
CPT Codes Commonly Billed with I44.0
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
- 93010 EKG interpretation only — same dx as 93000 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
- 0573T CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
- 0574T CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
- 0614T CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
- 0577T CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
- 0572T CMS LCD: Billing and Coding: Implantable Automatic Defibrillators CMS LCD
Convert I44.0 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 |
|---|---|---|
| I44.0 | 42611 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To I44.0
Other codes in section I30-I5A (Other forms of heart disease).
ICD-10 I44.0, Billing FAQ
Is ICD-10 code I44.0 billable? +
Yes, I44.0 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What CPT codes are commonly billed with I44.0? +
Procedures frequently paired with I44.0 include: 93000, 93010, 33208, 33206, 33207.
What ICD-9 codes does I44.0 map to? +
Per CMS GEMs, I44.0 maps to ICD-9 codes: 42611. 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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