T39.1X1A is the authoritative medical code for Poisoning by 4-Aminophenol derivatives, accidental (unintentional), initial encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for poisoning by 4-aminophenol derivatives, accidental (unintentional), initial encounter (ICD-10-CM T39.1X1A), ensuring healthcare documentation aligns with current federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Poisoning by 4-Aminophenol derivatives, accidental (unintentional), initial encounter is a billable ICD-10-CM diagnosis code T39.1X1A. Includes: 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. Inclusion terms: Poisoning by 4-Aminophenol derivatives NOS. Excludes1 (not coded here): toxic reaction to local anesthesia in pregnancy O29.3-. Excludes2 (not included here): abuse and dependence of psychoactive substances F10-F19; abuse of non-dependence-producing substances F55.-; immunodeficiency due to drugs D84.821; drug reaction and poisoning affecting newborn P00-P96; pathological drug intoxication inebriation F10-F19. Code first: , for adverse effects, the nature of the adverse effect, such as:; adverse effect NOS T88.7; aspirin gastritis K29.-; blood disorders D56-D76; contact dermatitis L23-L25; dermatitis due to substances taken internally L27.-; nephropathy N14.0-N14.2. Use additional code: 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-). 7th character: The appropriate 7th character is to be added to each code from category T39.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for T39.1X1A in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes 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
Inclusion Terms
Alternative terms the tabular list files under this code.
- Poisoning by 4-Aminophenol derivatives NOS
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- toxic reaction to local anesthesia in pregnancy O29.3-
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- abuse and dependence of psychoactive substances F10-F19
- abuse of non-dependence-producing substances F55.-
- immunodeficiency due to drugs D84.821
- drug reaction and poisoning affecting newborn P00-P96
- pathological drug intoxication inebriation F10-F19
Code First
Underlying conditions that must be sequenced before this code.
- , for adverse effects, the nature of the adverse effect, such as:
- adverse effect NOS T88.7
- aspirin gastritis K29.-
- blood disorders D56-D76
- contact dermatitis L23-L25
- dermatitis due to substances taken internally L27.-
- nephropathy N14.0-N14.2
Use Additional Code
Supplementary codes the tabular list directs you to add.
- 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-)
Frequently Asked Questions (FAQ) & Clinical Guidance
Does T39.1X1A require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category T39.
What can't be coded together with T39.1X1A?
Per official ICD-10-CM Excludes1 instructions, T39.1X1A must not be reported together with: toxic reaction to local anesthesia in pregnancy (O29.3-).
Can T39.1X1A be reported alongside related conditions?
Per official ICD-10-CM Excludes2 instructions, T39.1X1A and the following are not considered part of each other and may both be reported when both conditions are present: abuse and dependence of psychoactive substances (F10-F19); abuse of non-dependence-producing substances (F55.-); immunodeficiency due to drugs (D84.821); drug reaction and poisoning affecting newborn (P00-P96).
Does T39.1X1A need to be sequenced after another code?
Yes. Code first: , for adverse effects, the nature of the adverse effect, such as:; adverse effect NOS (T88.7); aspirin gastritis (K29.-); blood disorders (D56-D76).
Is an additional code needed with T39.1X1A?
Use additional code(s) to specify: 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-).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to T39.1X1A in its code family, with their registry titles.
- T39.092 — Poisoning by salicylates, intentional self-harm
- T39.092A — Poisoning by salicylates, intentional self-harm, initial encounter
- T39.092D — Poisoning by salicylates, intentional self-harm, subsequent encounter
- T39.092S — Poisoning by salicylates, intentional self-harm, sequela
- T39.093 — Poisoning by salicylates, assault
- T39.093A — Poisoning by salicylates, assault, initial encounter
- T39.093D — Poisoning by salicylates, assault, subsequent encounter
- T39.093S — Poisoning by salicylates, assault, sequela
- T39.094 — Poisoning by salicylates, undetermined
- T39.094A — Poisoning by salicylates, undetermined, initial encounter
View all 40 codes in the T39 family
Associated Substances (13)
Substances from the official ICD-10-CM Table of Drugs and Chemicals that map to this code.
- 4-Aminophenol derivatives
- Acetaminophen
- Acetaminosalol
- Acetanilide
- Acetophenetedin
- Bromo-seltzer
- Exalgin
- P-Acetamidophenol
- Panadol
- Para-acetamidophenol
- Para-aminophenol derivatives
- Paracetamol
- Phenacetin