I45.9 – Conduction disorder, unspecified
ICD-10-CM 2027 diagnosis code · Other forms of heart disease
ICD-10-CM code
I45.9
- Code
I45.9(claims format:I459)- Description
- Conduction disorder, unspecified
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 9. Diseases of the circulatory system (I00-I99)
- Block
- I30-I5A Other forms of heart disease
- Parent codes
- I45
Notes for I45.9
Applicable to:
- Heart block NOS
- Stokes-Adams syndrome
Index terms for I45.9
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Adams-Stokes
- Spens' syndrome
- Syndrome, Stokes
- Syndrome, Spen's
- Arrhythmia, block
- Dropped heart beats
- Block, blocked, heart
- Syndrome, Adams-Stokes
- Block, blocked, cardiac
- Block, blocked, conduction
- Delay, delayed, conduction
- Block, blocked, arrhythmic
- Disorder, conduction, heart
- Defect, defective, conduction
- Attack, attacks, Stokes-Adams
- Attack, attacks, Adams-Stokes
- Morgagni-Stokes-Adams syndrome
- Disease, diseased, Stokes-Adams
- Disease, diseased, Adams-Stokes
- Syndrome, Morgagni-Adams-Stokes
- Stokes-Adams disease or syndrome
- Disease, diseased, Morgagni-Adams-Stokes
Related codes in I45
- I45.0 – Right fascicular blockBillable
- I45.1 – Other and unspecified right bundle-branch blockHeader
- I45.2 – Bifascicular blockBillable
- I45.3 – Trifascicular blockBillable
- I45.4 – Nonspecific intraventricular blockBillable
- I45.5 – Other specified heart blockBillable
- I45.6 – Pre-excitation syndromeBillable
- I45.8 – Other specified conduction disordersHeader
Frequently asked questions
What is ICD-10 code I45.9?
I45.9 is the ICD-10-CM code for conduction disorder, unspecified, in the block I30-I5A (Other forms of heart disease).
Is I45.9 a billable code?
Yes. I45.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does I45.9 belong to?
It belongs to category I45 – Other conduction disorders.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.