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2025 ICD-10-CM code T40.0

Poisoning by, adverse effect of, or underdosing of opium.

Code first the nature of the adverse effect.Use additional codes to specify manifestations of poisoning and the external cause (if applicable), as per ICD-10-CM guidelines.Always consult the current official ICD-10-CM coding manual for the most accurate and updated guidelines.

Modifiers may be applicable depending on the circumstances of the encounter and the services provided.Consult the current CPT and HCPCS coding manuals for appropriate modifier usage.

Medical necessity for coding T40.0 is established when the patient presents with symptoms or complications directly related to opium exposure, including poisoning, adverse reactions, or complications related to underdosing.Documentation should clearly link the symptoms or complications to the opium use, indicating a causal relationship.

The clinical responsibility varies depending on the setting.It could involve emergency medicine physicians, hospitalists, intensive care specialists, or addiction medicine specialists.Treatment may range from supportive care to the administration of antidotes (if available) and management of complications.

IMPORTANT:Consider additional codes from categories T36-T50 (with 5th/6th character 5) to specify the drug, and codes from other chapters to specify the nature of the adverse effect (e.g., respiratory depression, gastrointestinal issues).Codes from chapter 20 (External causes of morbidity) should be used to identify the cause of the injury. If a retained foreign body is present, use code Z18.-

In simple words: This code is used when someone gets sick or has a reaction because of opium, whether they took too much, too little, or it was given the wrong way.It covers accidental poisoning, intentional overdoses, and mistakes with medication.

This code classifies instances of poisoning, adverse effects, or underdosing resulting from opium use.It encompasses various scenarios, including accidental ingestion, intentional overdose, errors in medication administration, and instances of taking less opium than prescribed.Additional codes may be necessary to specify the nature of the adverse effect and the manifestation of the poisoning.The use of opium should be further specified using codes from categories T36-T50 with a fifth or sixth character of 5.

Example 1: A patient presents to the emergency department after accidentally ingesting a significant quantity of opium.The patient exhibits respiratory depression and altered mental status., A patient is admitted to a hospital for opioid withdrawal, having deliberately reduced their opioid consumption below the prescribed amount., A patient experiences an allergic reaction to opium given as part of a prescribed medication regimen.This manifests as a severe skin rash and difficulty breathing.

Detailed documentation should include: patient history (including opium use), method of opium ingestion/exposure, presenting symptoms, physical examination findings, laboratory results (including toxicology), and treatment administered.Documentation should also note if the opium ingestion was intentional or accidental.For adverse effects, documentation should include a detailed description of the adverse effect and the course of events that led to it.

** This code should be used cautiously, and careful consideration should be given to the specific circumstances surrounding the opium exposure to ensure accurate coding.Always consult with a qualified coding specialist if any questions arise.

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