T50.901A2022 ICD-10-CM Diagnosis Code T50. 901A: Poisoning by unspecified drugs, medicaments and biological substances, accidental (unintentional), initial encounter.
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').
During chemotherapy, you want to use the ICD-10 diagnosis code of Z51. 81 for the echocardiogram as the primary diagnosis.
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%).
External causes of morbidity ICD-10-CM Code range V00-Y99V00-X58. Accidents.X71-X83. Intentional self-harm.X92-Y09. Assault.Y21-Y33. Event of undetermined intent.Y35-Y38. Legal intervention, operations of war, military operations, and terrorism.Y62-Y84. Complications of medical and surgical care.Y90-Y99.
The ICD-10-CM code T39. 1X2A might also be used to specify conditions or terms like acetaminophen overdose, intentional paracetamol overdose, intentional paracetamol poisoning, poisoning caused by acetaminophen or suicide attempt by acetaminophen overdose. T39.
2022 ICD-10-CM Diagnosis Code Z51. 11: Encounter for antineoplastic chemotherapy.
2022 ICD-10-CM Diagnosis Code Z51. 81: Encounter for therapeutic drug level monitoring.
Other long term (current) drug therapy 899 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2022 edition of ICD-10-CM Z79. 899 became effective on October 1, 2021.
When coding an adverse effect of a drug that has been correctly prescribed and properly administered, assign the appropriate code for the nature of the adverse effect followed by the appropriate code for the adverse effect of the drug (T36-T50).
Issue/impact: In ICD-10-CM, the 5th or 6th character in the drug overdose diagnosis code is used to identify the intent, or manner, of the injury.
Take “sore throat” for example. Code R07. 0, “Pain in throat,” specifically excludes “sore throat (acute),” but J02. 9, “Acute pharyngi- tis, unspecified,” specifically includes “sore throat (acute).” Therefore, it appears that ICD-10 considers “sore throat” to be a definitive diagnosis rather than a symptom.