T44.90
Header — not billablePoisoning by, adverse effect of and underdosing of unspecified drugs primarily affecting the autonomic nervous system
The ICD-10 code for poisoning by, adverse effect of and underdosing of unspecified drugs primarily affecting the autonomic nervous system is T44.90.
T44.90 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 6 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.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under T44.90
- T44.901Poisoning by unspecified drugs primarily affecting the autonomic nervous system, accidental (unintentional)
- T44.902Poisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm
- T44.903Poisoning by unspecified drugs primarily affecting the autonomic nervous system, assault
- T44.904Poisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined
- T44.905Adverse effect of unspecified drugs primarily affecting the autonomic nervous system
- T44.906Underdosing of unspecified drugs primarily affecting the autonomic nervous system
Related codes in this category
- T44.99Poisoning by, adverse effect of and underdosing of other drugs primarily affecting the autonomic nervous systemnon-billable header
- T44.90Poisoning by, adverse effect of and underdosing of unspecified drugs primarily affecting the autonomic nervous systemnon-billable header