EasyMindCare

Behavioral Assessment & Testing

96159 CPT

Health behavior intervention, individual; each additional 15 minutes (add-on)

System

CPT code

Timing

Time-based — 15-min units

Add-on

Yes — needs a primary code

CPT 96159 is the add-on to 96158, reporting each additional 15 minutes of individual health behavior intervention beyond the first 30 minutes.

When to use 96159

Add 96159 when an individual intervention (96158) extends past 30 minutes. It is never billed alone.

How to bill it

Report one unit per additional 15 minutes alongside 96158 on the same date.

Common pitfalls

  • Billing 96159 without the primary 96158.
  • Counting assessment (96156) time as intervention time.

Frequently asked questions

Is 96159 billable by itself?

No. It is an add-on and must accompany 96158 for individual intervention.

How is time counted?

Count only the face-to-face intervention time beyond the initial 30 minutes, in 15-minute increments.

Related Behavioral Assessment & Testing codes

96156 CPT

Health behavior assessment or reassessment

View code

96127 CPT

Brief emotional/behavioral assessment, per standardized instrument

View code

96146 CPT

Psychological/neuropsychological test administration, single automated instrument

View code

96110 CPT

Developmental screening, per standardized instrument

View code

96158 CPT

Health behavior intervention, individual; initial 30 minutes

View code

96164 CPT

Health behavior intervention, group (two or more); initial 30 minutes

View code

96165 CPT

Health behavior intervention, group; each additional 15 minutes (add-on)

View code

96167 CPT

Health behavior intervention, family without patient; initial 30 minutes

View code

Pair this code with a billing tool

Superbill Generator

Generate a therapist superbill PDF with practice details, client information, diagnosis codes, and session fees in one ungated browser download.

GFE Generator

Generate a therapist-ready Good Faith Estimate with practice and client details, expected services, diagnosis, and per-session fees to support No Surprises Act compliance.

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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