Question 1

What is ICD-10 code F19.90?

Accepted Answer

F19.90 is the ICD-10-CM diagnosis code for other psychoactive substance use, unspecified, uncomplicated. Use of various psychoactive substances (not specified which type) without complications or symptoms. F19.90 sits in the ICD-10-CM chapter for mental, behavioral and neurodevelopmental disorders (f01-f99), within the section covering mental and behavioral disorders due to psychoactive substance use (f10-f19).

F19.90 is a billable ICD-10-CM code, but the current payload does not show a mapping under the CMS-HCC V28 or V24 community payment models, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.

Use this code when the specific substance cannot be identified and there are no intoxication or withdrawal symptoms.

Question 2

Is F19.90 an HCC code?

Accepted Answer

F19.90 has no payable CMS-HCC V28 mapping in the final FY2026 CMS file.

Question 3

Is F19.90 billable?

Accepted Answer

Yes. F19.90 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. F19.90 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Question 4

Which HCC does F19.90 map to under V28?

Accepted Answer

F19.90 has no payable CMS-HCC V28 mapping in the final FY2026 CMS file.

Question 5

What RAF reference is published for F19.90?

Accepted Answer

F19.90 has no V28 reference coefficient because the final FY2026 source verifies no payable V28 mapping.

Question 6

What is the V28 vs V24 difference for F19.90?

Accepted Answer

F19.90 has verified no payable V28 mapping in the final FY2026 source. Select a historical effective period before making any V24 comparison.

Question 7

What documentation supports F19.90?

Accepted Answer

Use this code when the specific substance cannot be identified and there are no intoxication or withdrawal symptoms This is the least severe category for unspecified psychoactive substance use F19.90 is not a CMS-HCC V28 payment code in the verified current source, so MEAT is not the payment hook. Documentation still has to support the diagnosis if you report it.

Question 8

Can F19.90 be a primary diagnosis?

Accepted Answer

Yes. F19.90 carries no code-first instruction in the FY2026 tabular, so it can be the first-listed diagnosis when it is the condition chiefly responsible for the encounter and the note supports it, and it can also be reported as a secondary diagnosis. For risk adjustment the order does not matter; the V28 category is the same either way.

Question 9

Which codes cannot be reported with F19.90?

Accepted Answer

The Excludes1 note that applies to F19.90 lists other psychoactive substance abuse (F19.1-); other psychoactive substance dependence (F19.2-). An Excludes1 condition is not reported together with F19.90; report one or the other, unless the two conditions are unrelated, which the ICD-10-CM Official Guidelines (Section I.A.12.a) allow. The Excludes2 note lists symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99); those are separate conditions that may be reported together with F19.90 when both are documented.

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F19.90 ICD-10-CM Code: Other psychoactive substance use, unspecified, uncomplicated

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F19.90

Is F19.90 an HCC code?

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What This Code Means

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Child Codes

Code Hierarchy

Also searched as

Work F19.90 in HCC Buddy