I44.6
Header — not billableOther and unspecified fascicular block
The ICD-10 code for other and unspecified fascicular block is I44.6.
I44.6 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 2 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
- •Laterality-specific codes exist for this condition — confirm the affected side is documented.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under I44.6
Related codes in this category
- I44.0Atrioventricular block, first degree
- I44.1Atrioventricular block, second degree
- I44.2Atrioventricular block, complete
- I44.3Other and unspecified atrioventricular blocknon-billable header
- I44.4Left anterior fascicular block
- I44.5Left posterior fascicular block
- I44.7Left bundle-branch block, unspecified
- I44.6Other and unspecified fascicular blocknon-billable header