The clinical syndrome of any 'drug overdose' is typically represented by two broad ranges of codes within the ICD-10; “T36 to T50 Poisoning by drugs, medicaments and biological substances” ('T-codes') and “F10 to F19 Mental and behavioural disorders due to psychoactive substance use” ('F-codes').
Using a population-based, hospitalization database, we determined that the principal diagnostic codes for acetaminophen overdose (ICD-9-CM, 965.4; ICD-10, T39.
Opioid-poisoning ICD-9-CM codes (E850. 2–E850. 2, 965.00–965.09) identified overdose ED visits with a sensitivity of 25.0% (95% confidence interval [CI] = 13.6% to 37.8%) and specificity of 99.9% (95% CI = 99.8% to 100.0%).
ICD-10 code Z51. 81 for Encounter for therapeutic drug level monitoring is a medical classification as listed by WHO under the range - Factors influencing health status and contact with health services .
ICD-10 code F10. 129 for Alcohol abuse with intoxication, unspecified is a medical classification as listed by WHO under the range - Mental, Behavioral and Neurodevelopmental disorders .
Z79.82ICD-10 code Z79. 82 for Long term (current) use of aspirin is a medical classification as listed by WHO under the range - Factors influencing health status and contact with health services .
Other specified counselingICD-10 code Z71. 89 for Other specified counseling is a medical classification as listed by WHO under the range - Factors influencing health status and contact with health services .
Z51. 81 Encounter for therapeutic drug level monitoring - ICD-10-CM Diagnosis Codes.
Encounter for therapeutic drug level monitoring. Z51. 81 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The drug giving rise to the adverse effect should be identified by use of codes from categories T36-T50#N#ICD-10-CM Range T36-T50#N#Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances#N#Code First#N#, for adverse effects, the nature of the adverse effect, such as:#N#adverse effect NOS ( T88.7)#N#aspirin gastritis ( K29.-)#N#blood disorders ( D56 - D76)#N#contact dermatitis ( L23 - L25)#N#dermatitis due to substances taken internally ( L27.-)#N#nephropathy ( N14.0- N14.2)#N#Includes#N#adverse effect of correct substance properly administered#N#poisoning by overdose of substance#N#poisoning by wrong substance given or taken in error#N#underdosing by (inadvertently) (deliberately) taking less substance than prescribed or instructed#N#Note#N#The drug giving rise to the adverse effect should be identified by use of codes from categories T36-T50 with fifth or sixth character 5.#N#Type 1 Excludes#N#toxic reaction to local anesthesia in pregnancy ( O29.3-)#N#Type 2 Excludes#N#abuse and dependence of psychoactive substances ( F10-F19)#N#abuse of non-dependence-producing substances ( F55.-)#N#immunodeficiency due to drugs ( D84.821)#N#drug reaction and poisoning affecting newborn ( P00-P96)#N#pathological drug intoxication (inebriation) ( F10-F19)#N#Use Additional#N#code (s) to specify:#N#manifestations of poisoning#N#underdosing or failure in dosage during medical and surgical care ( Y63.6, Y63.8- Y63.9)#N#underdosing of medication regimen ( Z91.12-, Z91.13-)#N#T36 Poisoning by, adverse effect of and unde...#N#T37 Poisoning by, adverse effect of and unde...#N#T38 Poisoning by, adverse effect of and unde...#N#T39 Poisoning by, adverse effect of and unde...#N#T40 Poisoning by, adverse effect of and unde...#N#T41 Poisoning by, adverse effect of and unde...#N#T42 Poisoning by, adverse effect of and unde...#N#T43 Poisoning by, adverse effect of and unde...#N#T44 Poisoning by, adverse effect of and unde...#N#T45 Poisoning by, adverse effect of and unde...#N#T46 Poisoning by, adverse effect of and unde...#N#T47 Poisoning by, adverse effect of and unde...#N#T48 Poisoning by, adverse effect of and unde...#N#T49 Poisoning by, adverse effect of and unde...#N#T50 Poisoning by, adverse effect of and unde...#N#with fifth or sixth character 5.
T48 Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system. T49 Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs.
Underdosing refers to taking less of a medication than is prescribed by a provider or a manufacturer’s instruction. Assign code (s) for the nature of the underdosing first, followed by the underdosing code: the underdosing codes are never used as a first-reported diagnosis.
Poisoning indicates improper use of a medication, to include overdose, wrong substance given or taken in error, or wrong route of administration. When reporting poisoning by drugs, biological, and biological substances, assign the appropriate poisoning code first, followed by the manifestation code (s). For example, a patient intentionally takes ...
An adverse effect occurs when a substance is taken according to direction , and a reaction occurs. When reporting adverse effects, first, code the nature of the adverse effect, such as: aspirin gastritis (K29.-) dermatitis due to substances taken internally (L27.-) Use additional codes for any manifestations of adverse effects.