A Screening Score Is Not a Billable Service. The Intervention Is.
Addiction medicine carries two billing systems most practices run only one of. Screening and brief intervention pays for a conversation that has to be documented in a specific way. Intensive outpatient and opioid treatment pay as program episodes rather than as the counseling inside them. On top of both sits a federal confidentiality rule that decides who is allowed to see the record before a payer or an appeal can be answered. Money leaves through the seams between those three, and the claims look perfectly normal until a post payment review arrives.
Why Substance Use Treatment Claims Get Written Off
The codes for this specialty describe services in unusual shapes. Claims fail when the documentation is shaped like an ordinary office visit.
A positive screen is not a brief intervention
99408 and G0396 pay for two things in one encounter: a structured screening with a validated instrument such as AUDIT or DAST, and a brief intervention delivered face to face. A score pasted into the chart with a line saying the patient was counselled supports neither half. The intervention needs its own narrative, the discussion of the findings, the advice given and the plan agreed. The encounter also has to run at least 15 minutes of documented face to face time, one screening code is billable per patient per day, and the same day E/M is separately billable only where the payer allows it.
The commercial code is sent to Medicare
99408 and 99409 are the codes most commercial plans and Medicaid programs expect. Medicare uses its own pair, G0396 for the 15 to 30 minute band and G0397 beyond 30 minutes. A claim sent to Medicare with the commercial code comes back as not covered by this payer, and if nobody rebills it with the right code inside the filing window the encounter is gone. The reverse error happens too: a commercial plan that follows the Medicare code set will not pay the G code on a professional claim it does not recognize.
An intensive outpatient day is billed without the day
H0015 is a per diem for a program that operates at least three hours a day and at least three days a week under an individualised treatment plan, and it includes assessment, counseling, crisis intervention and activity therapies or education. A 90 minute group, a partial attendance day or a program that bills the per diem and then a separate individual therapy code for the same day are all recovery risks. Documentation has to show the hours delivered, who delivered them, and the plan the day was part of, because the per diem is a claim about the program rather than about the calendar.
Opioid treatment program bundles are taken apart
Medicare pays certified opioid treatment programs through weekly episode bundles running from G2067 to G2075, with separate codes covering methadone, oral buprenorphine, injectable buprenorphine, implants and naltrexone products. The bundle covers dispensing and administration, substance use counseling, individual and group therapy and the toxicology testing done in the episode, so splitting counseling or a dose into its own claim fails on both the code and the frequency rules. Only a certified program can bill these codes at all, and the same services outside a certified program are billed through completely different codes.
Office based medication treatment is coded as a drug visit
Buprenorphine dispensed through a pharmacy is a pharmacy benefit, while the office visit around it is an E/M service selected on medical decision making or total time, which makes the level of service a documentation question rather than an injection question. Naltrexone for extended release treatment is a medical benefit billed as an injection administration with the drug reported under its own code and its own units, and the administration is not billed with another administration code for the same encounter. Methadone for opioid use disorder is a treatment service only inside a federally certified opioid treatment program, which means the E/M pathway that works for buprenorphine does not exist for it.
The confidentiality rule decides what a payer can be told
Since 16 February 2026 the rules at 42 CFR Part 2 have been aligned with HIPAA, and enforcement now runs alongside HIPAA. A single written consent signed once can cover future disclosures for treatment, payment and health care operations instead of a fresh consent for every request, recipients can redisclose under HIPAA, and the old prohibition on redisclosure has been replaced by a patient notice that has to be updated to match the HIPAA notice. What did not change is everything outside those purposes: records still cannot be used in proceedings against the patient without written consent or a court order accompanied by a subpoena, and SUD counseling notes need their own separate consent.
Sending a full treatment record on a routine payer request without checking the consent is a disclosure that cannot be recalled, and refusing every request to stay safe loses appeals and timely filing deadlines.
Five Stages From Code Set to Clean Program Claims
The code set is split, the program services are bundled, and the record is protected. Each one changes how the claim has to be built.
Audit the screening and program trail
We sample encounters across the practice and rebuild what the documentation supports: screening instrument, score, face to face time and intervention narrative for every screening claim, hours delivered and the treatment plan behind every intensive outpatient per diem, and the medication, dispensing and counseling content behind every program bundle. Unsupported units are separated from recoverable ones before anything is refiled.
Split the code set by payer
A payer matrix drives the work: which payers take G0396 and G0397, which take 99408 and 99409, how each one treats a same day E/M alongside a screening code, which payers accept the intensive outpatient per diem and at what weekly frequency, and where partial hospitalization sits. The matrix lives in the claim scrub rules rather than in a document, so the right code is proposed before the claim is created.
Rebuild the documentation templates
Time and content become required fields: minutes of screening and intervention, the instrument and the score, the hours and modalities delivered in a program day, the treatment plan the day belongs to, the injection site, drug and units for a long acting medication, and the elements of a cognitive assessment. Templates are built so the clinician documents once and the coder reads the same facts.
Work the denials and corrected claims
Not covered by this payer denials are refiled with the code set that payer uses. Program day denials are appealed with the attendance record and the treatment plan attached. Bundle integrity questions get a response built from the program's own documentation, and confidentiality is handled properly rather than by delay: records are released under a valid consent, with SUD counseling notes and any non treatment purpose handled separately.
Report by program and by cause
You receive monthly reporting by payer, by service line and by denial cause, covering screening capture against positive screens, program day frequency, medication administration and the appeal outcomes that came back. The report is what shows whether the practice is being paid for the work it already documents.
The Work Inside Addiction Medicine Revenue Cycle Management
Six workstreams built around the code sets this specialty actually uses.
Screening and brief intervention
99408 and 99409 for commercial payers and G0396 and G0397 for Medicare, with the instrument, the score and the intervention narrative documented to support each encounter.
Intensive outpatient and partial hospital billing
H0015 per diem and partial hospitalization coded to the hours delivered, the treatment plan and the payer's own frequency limits.
Medication assisted treatment billing
Opioid treatment program bundles, office based buprenorphine E/M services, and injection administration with the drug reported under its own code and units.
Cognitive assessment and care planning
99483 billed with the independent historian and the required elements, with prolonged service time added only where the payer allows it.
Confidentiality and release management
42 CFR Part 2 consents, patient notices and record releases handled so a payer request is answered without an unnecessary disclosure or a filing deadline missed.
Enrollment, certification and contracting
Program certification, Medicaid enrollment and commercial contracting checked against the services the practice actually bills.
What Changes When the Code Set Is Split
The same clinicians, the same programs and the same patients. What changes is which payer sees which code and which facts are on the record.
| What changes | Without a process | With MedFactor |
|---|---|---|
| Screening | A score in the chart and no intervention narrative | Instrument, score, minutes and intervention documented together |
| Code set | One screening code sent to every payer | G0396 and G0397 for Medicare, 99408 and 99409 elsewhere |
| Program day | A per diem billed for whatever happened | Per diem claimed only where the hours and plan support it |
| Opioid treatment program | Counseling and dispensing billed separately | The weekly bundle as the payer defines it |
| Long acting medication | Administration billed without the drug and units | Administration with the product code and the correct units |
| Confidentiality | Whole record sent on request, or nothing sent at all | Consent checked first, then a compliant release |
Addiction Medicine Billing Questions Answered
What treatment directors and billing managers ask before changing how substance use services are coded.
They describe the same service to different payers. 99408 covers a structured screening with a validated instrument plus a brief intervention running 15 to 30 minutes, and 99409 covers the same service beyond 30 minutes. Medicare uses G0396 and G0397 for those two time bands. The services are time based, no more than one screening code is billable per patient per day, and the two bands are never billed together for one encounter. An encounter shorter than 15 minutes does not support either code.
Four things: the instrument used and the score, the total face to face time, the brief intervention itself, and the outcome or referral. The instrument has to be a validated one rather than a general impression, the intervention has to show the findings discussed and the advice and plan that came out of it, and the counseling has to be delivered by the practitioner rather than delegated. A separate E/M on the same day may be billable where the payer permits it, with the usual requirement that both services are separately documented.
H0015 pays a per diem for a program that runs at least three hours a day and at least three days a week under an individualised treatment plan, and the per diem already includes assessment, counseling, crisis intervention and activity therapies or education. The documentation has to show the hours delivered and the plan the day belonged to. A short day, a partial attendance day or a day spent in individual therapy that is also billed separately is where the recoupment comes from, because the per diem is a claim about the program rather than about attendance.
Medicare pays certified opioid treatment programs through weekly episode bundles covering dispensing and administration, substance use counseling, individual and group therapy and the testing performed in the episode, with separate codes for methadone, oral buprenorphine, injectable buprenorphine, implants and naltrexone products. Outside a certified program, buprenorphine dispensed through a pharmacy is a pharmacy benefit and the visit around it is billed as an E/M service. Methadone for opioid use disorder is a treatment service only within a certified program, so there is no office based equivalent to bill.
The administration is reported with the injection administration code for subcutaneous or intramuscular injection, and the drug itself is reported under its own product code with the number of units matching the dose given. The two lines belong on the same claim, and the injection administration is not billed with another administration code for the same encounter. Where the injection happened during an E/M visit, the visit is separately billable only when it was a significant, separately identifiable service, documented as such and reported with the appropriate modifier.
99483 pays for an assessment of and care plan for a patient with cognitive impairment, and it requires the patient to show signs of impairment, an independent historian to provide history the patient cannot reliably give, and the required elements including a cognition focused evaluation, functional assessment, medication reconciliation and a written care plan. It is not billed with an office or outpatient E/M on the same date, nor with a psychiatric diagnostic evaluation, a brief emotional and behavioral assessment or an advance care planning service. Where a payer allows additional time, prolonged service codes apply on their own rules.
A written consent that names the recipient and the purpose. Since 16 February 2026 a single consent can cover future disclosures for treatment, payment and health care operations rather than one consent per request, recipients may redisclose under HIPAA, and the accompanying notice has to be updated to align with the HIPAA notice of privacy practices. Disclosures for any other purpose still need their own consent, SUD counseling notes need a separate consent, and records cannot be used in civil, criminal, administrative or legislative proceedings against the patient without consent or a court order accompanied by a subpoena. Enforcement now runs alongside HIPAA, so a release without a valid consent carries the same weight as a HIPAA violation.
Four of them, in order of frequency. A screening claim denied because the intervention was not documented, which is a documentation problem rather than a payer problem. A commercial screening code sent to Medicare or a Medicare code sent to a commercial plan, which is fixed by refiling with the right code set inside the filing window. A program day challenged on hours or on services unbundled from the per diem, which needs the attendance record and treatment plan. And authorization or medical necessity denials on intensive outpatient and partial hospitalization, which are appealed on the treatment plan rather than on the claim.
Related specialties we bill for
The same code-level precision applies across the practice spectrum. See how we bill these related areas.
Sources and further reading
The rules these pages describe are published. Check them against the primary sources:
- CMS Physician Fee Schedule, which covers the published rates and payment rules behind most of the codes these pages discuss.
- CMS Physician Self-Referral (Stark Law), which covers the rules governing referrals between a practice and its own ancillary services.
- AAPC, which covers the coding and billing standards body whose credentialing most billers hold.
- HHS Office of Inspector General, which covers enforcement guidance on billing compliance and the areas it targets.
See which of your services are payable as documented
Send us a month of screening, intensive outpatient and medication administration claims with the notes behind them. We will show you what the documentation supports today, what the right code set is per payer, and which claims are worth refiling.