T44
Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 2 never code together
7th character 3
A initial encounter
D subsequent encounter
S sequela
Instructional notes 3
S00-T88chapter
Notes
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here filed at null
No alphabetic index entry points at this code.
Subordinate codes 10
T44.0 Anticholinesterase agents T44.1 Parasympathomimetics T44.2 Ganglionic blocking drugs T44.3 Parasympatholytics and spasmolytics T44.4 Predominantly alpha-adrenoreceptor agonists T44.5 Predominantly beta-adrenoreceptor agonists T44.6 Alpha-adrenoreceptor antagonists T44.7 Beta-adrenoreceptor antagonists T44.8 Centrally-acting and adrenergic-neuron- blocking agents T44.9 And unsp drugs aff the autonomic nervous system
Medications 5
16 Autonomic Nervous System Diseases drugs 1 Mercury Poisoning, Nervous System drugs 1 Lead Poisoning, Nervous System drugs 1336 Nervous System Diseases drugs 131 Nervous System Neoplasms drugs
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.