ICD-10-CM · Billable Code
T40.0X6A - Underdosing of opium, initial encounter
Chapter S00-T88: Injury, poisoning and certain other consequences of external causes
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Common questions about T40.0X6A (Underdosing of opium, initial encounter)
What does ICD-10 code T40.0X6A mean?
T40.0X6A is the ICD-10-CM 2025 code for Underdosing of opium, initial encounter. ICD-10-CM is the medical coding system used by clinicians, hospitals and insurers in the United States to classify diseases and conditions in a standard way.
Is T40.0X6A a billable diagnosis code?
Yes, T40.0X6A is a billable / specific ICD-10-CM code, meaning it can be used by clinicians and hospitals as a primary or secondary diagnosis on claims and electronic health records.
Which ICD-10 chapter does T40.0X6A belong to?
T40.0X6A belongs to the chapter "Injury, poisoning and certain other consequences of external causes" (codes S00-T88). ICD-10-CM organises codes into 22 chapters by body system or condition type, which helps clinicians navigate related diagnoses.
Where can I get plain-language information about Underdosing of opium, initial encounter?
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Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗