T44
Non-billableDrugs primarily affecting the autonomic nervous system
Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- adverse effect of correct substance properly administered
- poisoning by overdose of substance
- poisoning by wrong substance given or taken in error
- underdosing by (inadvertently) (deliberately) taking less substance than prescribed or instructed
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
Code First
The underlying condition must be sequenced before this code
- , for adverse effects, the nature of the adverse effect, such as:
- •adverse effect NOST88.7
- •aspirin gastritisK29
- •blood disordersD56-D76
- •contact dermatitisL23-L25
- •dermatitis due to substances taken internallyL27
- •nephropathyN14.0-N14.2
Use Additional Code
Additional codes that should follow this code
7th Character Definitions
- A - initial encounter
- D - subsequent encounter
- S - sequela
Child Codes (10)
T44.0Anticholinesterase agents
T44.1Parasympathomimetics
T44.2Ganglionic blocking drugs
T44.3Parasympatholytics and spasmolytics
T44.4Predominantly alpha-adrenoreceptor agonists
T44.5Predominantly beta-adrenoreceptor agonists
T44.6Alpha-adrenoreceptor antagonists
T44.7Beta-adrenoreceptor antagonists
T44.8Centrally-acting and adrenergic-neuron- blocking agents
T44.9And unsp drugs aff the autonomic nervous system
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(2)
Frequently Asked Questions
What is the ICD-10 code for drugs primarily affecting the autonomic nervous system?
The ICD-10-CM code for drugs primarily affecting the autonomic nervous system is T44. The full clinical description is "Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system". T44 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code T44 mean?
ICD-10-CM code T44 represents “Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system”. It is classified under Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes and is a non-billable header code. Use a more specific child code for billing purposes.
Is T44 a billable code?
No, T44 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 10 child codes under T44.
What chapter is T44 in?
T44 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).
What codes cannot be used with T44?
T44 has Excludes1 notes indicating codes that cannot be used together with it, including: birth trauma (P10-P15); obstetric trauma (O70-O71); toxic reaction to local anesthesia in pregnancy (O29.3-).
What are the subcategories under T44?
T44 has 10 child codes, including: T44.0 (Anticholinesterase agents), T44.1 (Parasympathomimetics), T44.2 (Ganglionic blocking drugs), T44.3 (Parasympatholytics and spasmolytics), and 6 more.
Are additional codes required with T44?
Yes, when using T44, also report: any retained foreign body, if applicable (Z18.-); code(s) to specify:; manifestations of poisoning; underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9); underdosing of medication regimen (Z91.12-, Z91.13-).
What are the UMLS CUIs for T44?
T44 is linked to 1 UMLS Concept Unique Identifier: C2878731. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does T44 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like drugs primarily affecting the autonomic nervous system affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of T44?
T44 maps to the ICD-11 code: NE60 (Harmful effects of drugs, medicaments or biological substances, not elsewhere classified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.