F18.99: Inhalant use, unspecified with unspecified inhalant-induced disorder

Risk adjustment

F18.99 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

• HCC 137 Drug Use Disorder, Moderate/Severe, or Drug Use with Non-Psychotic Complications0.424 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Medicare coverage

F18.99 is named in 9 Medicare coverage policies: 8 listing it as supporting medical necessity, and 1 listing it as NOT covered. Which one applies depends on your Medicare contractor.

• A52434Health and Behavior Assessment/Intervention – Medical Policy Articlenot covered
• A56645Billing and Coding: Controlled Substance Monitoring and Drugs of Abuse Testing
• A56756Billing and Coding: Home Health - Psychiatric Care
• A56818Billing and Coding: Urine Drug Testing