11.3 CPT Billing Codes for MTM (99605 / 99606 / 99607)

11.3 CPT Billing Codes for MTM (99605 / 99606 / 99607)

Quick Answer: Memorize the trio: 99605 = initial 15 minutes, new patient, pharmacist face-to-face MTM; 99606 = initial 15 minutes, established patient; 99607 = each additional 15 minutes add-on (only with 99605 or 99606). Technicians support clean documentation; pharmacists perform the billable clinical service.

Domain 3 expects billing support awareness—not making you a certified coder, but ensuring you recognize which code family applies to pharmacist MTM encounters and what documentation must be true before a claim goes out.

---

The MTM CPT Code Family

Standard CPT descriptors (widely used by state Medicaid and commercial MTM programs) are:

Critical rules:

1. 99607 cannot stand alone — it must be billed in conjunction with 99605 or 99606.
2. Base codes cover the first 15 minutes; longer visits add 99607 units.
3. Codes describe pharmacist MTM services with assessment/intervention as provided—not product dispensing.
4. Payer policies vary on frequency limits, telehealth modifiers, and whether Part D MTM is paid through these CPT codes or another vendor arrangement—always follow the payer/program rules in front of you.

---

New vs Established: Choosing 99605 vs 99606

Exam phrasing note: course outlines often say 99605 = initial face-to-face 15 min new patient, 99606 = subsequent 15 min established, 99607 = each additional 15 min add-on. That matches the CPT structure: 99606 is the established-patient counterpart to 99605 for the first 15 minutes of the encounter, and 99607 extends time.

Trap: billing 99605 every time a familiar patient returns “because MTM feels new today.” Established follow-ups generally use 99606, subject to payer definitions of new/established.

---

Time Math: How 99607 Units Work

Use total face-to-face pharmacist MTM time (per payer documentation rules):

Example: New patient initial MTM visit lasts 45 minutes face-to-face with the pharmacist. Typical coding: 99605 × 1 + 99607 × 2.

Example: Established patient returns for a 20-minute focused MTM follow-up. Typical coding: 99606 × 1 + 99607 × 1.

Individual payers may cap units per claim (for example, some Medicaid manuals limit 99607 units). Technicians should know where the time field lives in the MTM platform and escalate odd totals before claims drop.

---

What These Codes Are Not

Part D plan MTM programs may compensate pharmacies through vendor platforms, case rates, or plan contracts that do not look like a classic CMS-1500 with 99605 on every CMR. Still learn the CPT trio for exams and for Medicaid/commercial MTM desks that use them.

---

Documentation That Supports Clean Billing

Billable MTM claims fail when documentation cannot support who, what, how long, and why:

• Patient identifiers and payer eligibility for MTM services
• New vs established status
• Date of service and face-to-face (or payer-allowed modality) indication
• Start/stop or total minutes of pharmacist clinical time
• Assessment findings and interventions (or statement that assessment occurred)
• Medications reviewed / problems addressed at a level required by the payer
• Provider identity (pharmacist NPI as required)

---

Technician vs Pharmacist Billing Roles

Hard boundary for the exam: technicians provide billing support awareness and documentation quality; they do not become the rendering clinical provider for 99605-series services.

---

Realistic Billing Scenarios

Scenario A — New patient 45-minute CMR-style visit

First face-to-face MTM visit, pharmacist documents 45 minutes. Coding pattern: 99605 + 99607 × 2. Technician ensures the note includes time and that the Standardized Format delivery is logged separately as clinical/program documentation.

Scenario B — Established 15-minute adherence follow-up

Patient returns two weeks later for a focused MTM check lasting 15 minutes. Coding pattern: 99606 alone (no 99607). Using 99605 again is the classic wrong answer on exams.

Scenario C — Add-on without base

Software lets a user drop 99607 alone. Technician catches it in a billing QA sweep and corrects to include 99605 or 99606.

Scenario D — Dispensing mislabeled as MTM

A 3-minute pickup conversation is coded as 99606. Correct action: do not bill MTM CPT for routine dispensing counseling; reserve codes for true pharmacist MTM encounters meeting payer definitions.

Scenario E — Tech completes paperwork, pharmacist never sees patient

Intake forms are perfect, but no pharmacist face-to-face MTM service occurred. There is no 99605/99606 service to bill.

Quick billing self-check

• Is this a pharmacist MTM encounter (not dispensing only)?
• New → 99605 or established → 99606 for the first 15 minutes?
• Minutes documented to support any 99607 units?
• 99607 never alone?
• Payer-specific frequency/telehealth rules checked?

Memorize the table, then practice two calculations: a 30-minute new visit and a 15-minute established visit. If those are automatic, this Domain 3 billing block is exam-ready.