T36.0X2A is the authoritative medical code for Poisoning by penicillins, intentional self-harm, initial encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for poisoning by penicillins, intentional self-harm, initial encounter (ICD-10-CM T36.0X2A), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Poisoning by penicillins, intentional self-harm, initial encounter is a billable ICD-10-CM diagnosis code T36.0X2A. 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. Excludes1 (not coded here): antineoplastic antibiotics T45.1-; locally applied antibiotic NEC T49.0; topically used antibiotic for ear, nose and throat T49.6; topically used antibiotic for eye T49.5; 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 T36.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for T36.0X2A 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
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- antineoplastic antibiotics T45.1-
- locally applied antibiotic NEC T49.0
- topically used antibiotic for ear, nose and throat T49.6
- topically used antibiotic for eye T49.5
- 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 T36.0X2A require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category T36.
What can't be coded together with T36.0X2A?
Per Excludes1 instructions, T36.0X2A must not be reported with: antineoplastic antibiotics (T45.1-); locally applied antibiotic NEC (T49.0); topically used antibiotic for ear, nose and throat (T49.6); topically used antibiotic for eye (T49.5).
Can T36.0X2A be reported alongside related conditions?
Per Excludes2 instructions, T36.0X2A and the following may both be reported 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).
Does T36.0X2A 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 T36.0X2A?
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-).
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as T36.0X2A, with their registry titles.
- T36 — Poisoning by, adverse effect of and underdosing of systemic antibiotics
- T36.0 — Poisoning by, adverse effect of and underdosing of penicillins
- T36.0X — Poisoning by, adverse effect of and underdosing of penicillins
- T36.0X1 — Poisoning by penicillins, accidental (unintentional)
- T36.0X1A — Poisoning by penicillins, accidental (unintentional), initial encounter
- T36.0X1D — Poisoning by penicillins, accidental (unintentional), subsequent encounter
- T36.0X1S — Poisoning by penicillins, accidental (unintentional), sequela
- T36.0X2 — Poisoning by penicillins, intentional self-harm
- T36.0X2D — Poisoning by penicillins, intentional self-harm, subsequent encounter
- T36.0X2S — Poisoning by penicillins, intentional self-harm, sequela
- T36.0X3 — Poisoning by penicillins, assault
- T36.0X3A — Poisoning by penicillins, assault, initial encounter
- T36.0X3D — Poisoning by penicillins, assault, subsequent encounter
- T36.0X3S — Poisoning by penicillins, assault, sequela
- T36.0X4 — Poisoning by penicillins, undetermined
- T36.0X4A — Poisoning by penicillins, undetermined, initial encounter
- T36.0X4D — Poisoning by penicillins, undetermined, subsequent encounter
- T36.0X4S — Poisoning by penicillins, undetermined, sequela
- T36.0X5 — Adverse effect of penicillins
- T36.0X5A — Adverse effect of penicillins, initial encounter
- T36.0X5D — Adverse effect of penicillins, subsequent encounter
- T36.0X5S — Adverse effect of penicillins, sequela
- T36.0X6 — Underdosing of penicillins
- T36.0X6A — Underdosing of penicillins, initial encounter
- T36.0X6D — Underdosing of penicillins, subsequent encounter
- T36.0X6S — Underdosing of penicillins, sequela
- T36.1 — Poisoning by, adverse effect of and underdosing of cephalosporins and other beta-lactam antibiotics
- T36.1X — Poisoning by, adverse effect of and underdosing of cephalosporins and other beta-lactam antibiotics
- T36.1X1 — Poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional)
- T36.1X1A — Poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional), initial encounter
- T36.1X1D — Poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional), subsequent encounter
- T36.1X1S — Poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional), sequela
- T36.1X2 — Poisoning by cephalosporins and other beta-lactam antibiotics, intentional self-harm
- T36.1X2A — Poisoning by cephalosporins and other beta-lactam antibiotics, intentional self-harm, initial encounter
- T36.1X2D — Poisoning by cephalosporins and other beta-lactam antibiotics, intentional self-harm, subsequent encounter
- T36.1X2S — Poisoning by cephalosporins and other beta-lactam antibiotics, intentional self-harm, sequela
- T36.1X3 — Poisoning by cephalosporins and other beta-lactam antibiotics, assault
- T36.1X3A — Poisoning by cephalosporins and other beta-lactam antibiotics, assault, initial encounter
- T36.1X3D — Poisoning by cephalosporins and other beta-lactam antibiotics, assault, subsequent encounter
- T36.1X3S — Poisoning by cephalosporins and other beta-lactam antibiotics, assault, sequela
Associated Substances (54)
Substances from the official ICD-10-CM Table of Drugs and Chemicals that map to this code.
- Adicillin
- Amdinocilline
- Amoxicillin
- Ampicillin
- Ancillin
- Apalcillin
- Aspoxicillin
- Azidocillin
- Azlocillin
- Bacampicillin
- Benethamine penicillin
- Benzathine benzylpenicillin
- Benzathine penicillin
- Benzylpenicillin
- Carbenicillin
- Carfecillin
- Carindacillin
- Ciclacillin
- Clometocillin
- Cloxacillin
- Cyclacillin
- Dicloxacillin
- Epicillin
- Flucloxacillin
- Hetacillin
- Hydrabamine penicillin
- Imipenem
- Isoxazolyl penicillin
- Mecillinam
- Metampicillin
- Methicillin
- Methoxybenzyl penicillin
- Meticillin
- Mezlocillin
- Nafcillin
- Oxacillin
- Penamecillin
- Penethamate
- Penicillin (any)
- Phenbenicillin
- Pheneticillin
- Phenoxymethyl penicillin
- Phenthicillin
- Piperacillin
- Pivampicillin
- Pivmecillinam
- Propicillin
- Sulbactam
- Sulbenicillin
- Sultamicillin
- Talampicillin
- Temocillin
- Ticarcillin
- Xantocillin
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code T37.0X2A
Poisoning by sulfonamides, intentional self-harm, initial encounter
ICD Code T38.0X2A
Poisoning by glucocorticoids and synthetic analogues, intentional self-harm, initial encounter
ICD Code T41.0X2A
Poisoning by inhaled anesthetics, intentional self-harm, initial encounter