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ICD-10-CM 2026 · Effective October 1, 2025

ICD-10 I44.39

Billable / Specific

Other atrioventricular block

I44
Block
0
Synonyms
255
LCDs
15
Payer Policies
2
Linked CPTs

About ICD-10-CM I44.39

ICD-10-CM code I44.39 represents Other atrioventricular block. This is a billable/specific code in the Circulatory System chapter (block I44). The 2026 edition of ICD-10-CM I44.39 became effective on October 1, 2025.

Medicare LCD Coverage for I44.39

Local Coverage Determinations (LCDs) from CMS MACs that list I44.39 as a covered diagnosis.

255 LCDs

Showing top 10 of 255 total . Click a CPT for full coverage scope.

CMS LCD: Billing and Coding: Ambulatory Electrocardiograph (AECG) Monitoring
Article ID: 59270, Effective: 2025-01-01 00:00:00, 153 covered, 0 non-covered
CPT 93270 →
CMS LCD: Billing and Coding: Ambulatory Electrocardiograph (AECG) Monitoring
Article ID: 59270, Effective: 2025-01-01 00:00:00, 153 covered, 0 non-covered
CPT 93298 →
CMS LCD: Billing and Coding: Ambulatory Electrocardiograph (AECG) Monitoring
Article ID: 59270, Effective: 2025-01-01 00:00:00, 153 covered, 0 non-covered
CPT 93225 →
CMS LCD: Billing and Coding: Ambulatory Electrocardiograph (AECG) Monitoring
Article ID: 59270, Effective: 2025-01-01 00:00:00, 153 covered, 0 non-covered
CPT 93271 →
CMS LCD: Billing and Coding: Ambulatory Electrocardiograph (AECG) Monitoring
Article ID: 59270, Effective: 2025-01-01 00:00:00, 153 covered, 0 non-covered
CPT 93246 →
CMS LCD: Billing and Coding: Ambulatory Electrocardiograph (AECG) Monitoring
Article ID: 59270, Effective: 2025-01-01 00:00:00, 153 covered, 0 non-covered
CPT 93272 →
CMS LCD: Billing and Coding: Ambulatory Electrocardiograph (AECG) Monitoring
Article ID: 59270, Effective: 2025-01-01 00:00:00, 153 covered, 0 non-covered
CPT 93242 →
CMS LCD: Billing and Coding: Ambulatory Electrocardiograph (AECG) Monitoring
Article ID: 59270, Effective: 2025-01-01 00:00:00, 153 covered, 0 non-covered
CPT 93228 →
CMS LCD: Billing and Coding: Ambulatory Electrocardiograph (AECG) Monitoring
Article ID: 59270, Effective: 2025-01-01 00:00:00, 153 covered, 0 non-covered
CPT 0938T →
CMS LCD: Billing and Coding: Ambulatory Electrocardiograph (AECG) Monitoring
Article ID: 59270, Effective: 2025-01-01 00:00:00, 153 covered, 0 non-covered
CPT 0937T →

Commercial Payer Coverage

Coverage policies from major commercial payers referencing I44.39.

15 policies

1 Cigna

Transthoracic Echocardiography in Adults - (0510)
Policy ID: MM_0510

5 Medicare

Billing and Coding: Infliximab and biosimilars
Policy ID: ART-52423
Billing and Coding: Single Chamber and Dual Chamber Permanent Cardiac Pacemaker
Policy ID: ART-54831
Billing and Coding: Cardiac Radionuclide Imaging
Policy ID: ART-56476
Billing and Coding: Transthoracic Echocardiography (TTE)
Policy ID: ART-56781
Billing and Coding: Cardiovascular Stress Testing, Including Exercise and/or Pharmacological Stress and Stress Echocardiography
Policy ID: ART-57183

CPT Codes Commonly Billed with I44.39

Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.

2 linkages
  • 33274 CMS LCD: Billing and Coding: Single Chamber and Dual Chamber Permanent Cardiac Pacemaker CMS LCD
  • 33275 CMS LCD: Billing and Coding: Single Chamber and Dual Chamber Permanent Cardiac Pacemaker CMS LCD

Convert I44.39 to ICD-9-CM

Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.

ICD-10ICD-9Mapping Flags
I44.39 42650 10000

Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).

ICD-10 I44.39, Billing FAQ

Is ICD-10 code I44.39 billable? +

Yes, I44.39 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 I44.39? +

Procedures frequently paired with I44.39 include: 33274, 33275.

What ICD-9 codes does I44.39 map to? +

Per CMS GEMs, I44.39 maps to ICD-9 codes: 42650. 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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