T40.3X6S (Underdosing of methadone, sequela) is a billable ICD-10-CM medical diagnosis code in the Injury, poisoning and certain other consequences of external causes chapter. It identifies cases of underdosing of methadone, sequela for clinical documentation, billing and epidemiological tracking.

ICD-10-CM · Billable Code

T40.3X6S - Underdosing of methadone, sequela

Chapter S00-T88: Injury, poisoning and certain other consequences of external causes

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Related diagnoses

T40.3X6AUnderdosing of methadone, initial encounterT40.3X6DUnderdosing of methadone, subsequent encounter

Common questions about T40.3X6S (Underdosing of methadone, sequela)

What does ICD-10 code T40.3X6S mean?
T40.3X6S is the ICD-10-CM 2025 code for Underdosing of methadone, sequela. 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 T40.3X6S a billable diagnosis code?
Yes, T40.3X6S 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 T40.3X6S belong to?
T40.3X6S 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 methadone, sequela?
For a plain-language explanation of Underdosing of methadone, sequela, ask GoDavaii's Health AI - it explains medical conditions in 90+ languages, free, with no signup. Tap "Ask GoDavaii AI about Underdosing of methadone, sequela" above to get a personalised answer.

Source: ICD-10-CM 2025 (Centers for Medicare & Medicaid Services, public domain). Codes valid from October 1, 2024. CMS source ↗