T40.5X6A

Billable

Underdosing of cocaine, initial encounter

T40.5X6A is the ICD-10-CM code for Underdosing of cocaine, initial encounter. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
S00-T88
Parent
T40.5X6
Edition
FY2026

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

What this means — in plain language

MedlinePlus · NIH

What is cocaine? Cocaine is a very addictive drug that is made from leaves of the coca plant found in South America. It is mostly available as an illegal drug that some people use to get high. In rare cases, it is also used as a prescription drug for for anesthesia during certain surgeries. As a street (illegal) drug, cocaine is usually a fine, white, crystal powder. Street dealers sometimes mix it with cornstarch,…

Read more about Cocaine at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

No additional coding notes for this code.

Frequently asked questions

What is ICD-10 code T40.5X6A?
T40.5X6A is the ICD-10-CM code for "Underdosing of cocaine, initial encounter". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is T40.5X6A a billable code?
Yes — T40.5X6A is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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