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ICD-10-CM Code I45.5
Other specified heart block

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

I45.5 is a billable ICD code used to specify a diagnosis of other specified heart block. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code I455 is used to code Sinoatrial block

The initial impulse in a heart is usually formed in the Sinoatrial (SA) node and carried through the atria, down the internodal atrial pathways, and to the Atrioventricular (AV) node. In normal conduction, the impulse would travel across the “bundle of His” (AV bundle), down the bundle branches, and into the Purkinje fibers. This would depolarize the ventricles and cause them to contract.

Specialty: Cardiology
MeSH Code: D012848
ICD 9 Code: 426.6

Sinus rhythm (rate = 65/min) with Type II S-A (exit) block, (see laddergram). Note that the long cycles (191) are nearly identical to twice the short cycles (190).

Source: Wikipedia

Coding Notes for I45.5 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Sinoatrial block
Sinoauricular block
Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here."
Heart block NOS - instead, use code I45.9

MS-DRG Mapping

  • DRG Group #308-310 - Cardiac arrhythmia and conduction disorders with MCC.
  • DRG Group #308-310 - Cardiac arrhythmia and conduction disorders with CC.
  • DRG Group #308-310 - Cardiac arrhythmia and conduction disorders without CC or MCC.

Related Concepts SNOMET-CT

  • Sinus arrest (disorder)
  • Sinoatrial block (disorder)

ICD-10-CM Alphabetical Index References for 'I45.5 - Other specified heart block'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code I45.5. Click on any term below to browse the alphabetical index.


Other heart block (exact match)

This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 426.6 was previously used, I45.5 is the appropriate modern ICD10 code.

Parent Code: I45 - Other conduction disorders

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/I455