Substance Use & SBIRT

99409 CPT

Alcohol and/or substance abuse screening and brief intervention; each additional 30 minutes

System

CPT code

Timing

Time-based — 30-min units

Add-on

Yes — needs a primary code

CPT 99409 is the add-on to 99408, reporting each additional 30 minutes of alcohol and/or substance abuse screening and brief intervention.

When to use 99409

Add 99409 when a SBIRT service extends beyond the first 30 minutes reported by 99408.

How to bill it

Report one unit per additional 30 minutes alongside 99408 on the same date.

Common pitfalls

Billing 99409 without the primary 99408.
Using it when the total service was under 30 minutes.

Frequently asked questions

Can 99409 be billed alone?

No. It is an add-on to 99408 and applies only when the total SBIRT service exceeds 30 minutes.

What is the Medicare equivalent?

Medicare uses G0397 for SBIRT services exceeding 30 minutes rather than 99409.

Related Substance Use & SBIRT codes

99408 CPT

Alcohol and/or substance abuse screening and brief intervention; 15 to 30 minutes

View code

G0396 HCPCS

Alcohol and/or substance misuse structured assessment and brief intervention; 15 to 30 minutes

View code

G0397 HCPCS

Alcohol and/or substance misuse structured assessment and brief intervention; greater than 30 minutes

View code

G0442 HCPCS

Annual alcohol misuse screening; 5 to 15 minutes

View code

G0443 HCPCS

Brief face-to-face behavioral counseling for alcohol misuse; 15 minutes

View code

G0444 HCPCS

Annual depression screening in adults

View code

Pair this code with a billing tool

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OON Reimbursement Estimator

Help clients estimate their insurance reimbursement for out-of-network sessions based on coinsurance, deductible, and session fee.

ICD-10 Code Lookup

Search ICD-10-CM mental and behavioral health diagnosis codes by number or plain-language term like depression, PTSD, ADHD, or anxiety to see the description, billable status, and a clinical note.

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