96374 is the initial intravenous push of a therapeutic, prophylactic, or diagnostic drug — used when push is the only service of the encounter or the first ranked service. 96375 is each additional sequential push of a different drug on the same date of service, billed as an add-on. 96376 is each additional sequential push of the same drug already pushed earlier in the encounter — but it is restricted to hospital outpatient department (HOPD) facility settings; physician offices cannot bill 96376 because the additional same-drug push is included in 96374's practice-expense RVU.
The IV push family lives in the AMA CPT manual under the Hydration, Therapeutic, Prophylactic, and Diagnostic Injections and Infusions heading (96360 through 96379). CMS adopts the CPT definitions and adds Medicare-specific operational guidance in Internet-Only Manual Publication 100-04 (Medicare Claims Processing Manual), Chapter 12, §30.5. The hierarchy rule — initial-service ranking from chemotherapy infusion down through hydration — is the structural foundation that determines whether a push is coded as 96374 initial or 96375/96376 additional.
CMS guidance defines an IV push as a direct injection delivered over a period of 15 minutes or less, or any administration where the medical record does not document start and stop times consistent with an infusion. Administrations of 16 minutes or longer with documented infusion timing fall into the infusion families (96365/96366 non-chemo, 96413/96415 chemo). The push-vs-infusion decision precedes the 96374/96375/96376 sub-selection.
The 96376 facility-only restriction is the most frequently misapplied rule in this family. The code description explicitly states “requires the presence of a physician” and CMS Pub 100-04 Ch.12 §30.5 clarifies that 96376 is reportable only in the hospital outpatient department context. The HCPCS site-of-service edits and several MAC LCDs reinforce that 96376 paired with place-of-service 11 (office) will deny.
In oncology practice, the 96374 family most commonly appears as a premedication sequence preceding a chemotherapy infusion. A typical R-CHOP infusion encounter might include a 96413 initial (rituximab infusion), a 96375 add-on for a Solu-Medrol IV push premed (different drug from rituximab), and a 96375 add-on for a Benadryl IV push premed (different drug from Solu-Medrol). The chemo infusion outranks the pushes as the initial service, so neither premed becomes 96374. In an IV iron loading clinic that pushes Injectafer over 8 minutes, with no other administration service, the encounter codes as a single 96374. In a hospital outpatient infusion suite that pushes a second dose of Solu-Medrol two hours after the first for an acute exacerbation, the encounter codes as 96374 + 96376 — but only because the setting is HOPD.
The two most common misuse patterns are: billing 96374 for a chemotherapy push (it belongs to 96409) and billing 96376 with POS 11. Both fail at NCCI or MAC edit and produce predictable denials.
The major commercial payers align closely to CMS on IV push code selection, hierarchy rules, and the 96376 facility-only restriction. Variation appears mostly at the medical-necessity layer (whether the underlying drug is covered for the indication) rather than at the administration-code layer. Where divergence does occur, it tends to be around units-per-encounter caps and bundling with E/M codes.
| Payer | 96374 family rules | Notes |
|---|---|---|
| Medicare (Part B) | Aligns with CPT & Pub 100-04 Ch.12 §30.5 | Source-of-truth payer for the hierarchy rule and the 96376 HOPD restriction. MAC LCDs (Novitas, Palmetto, NGS, WPS, Noridian, FCSO) reiterate the IOM rule. NCCI policy manual Chapter 11 (Medicine Services) governs same-day bundling with E/M and other administration codes. |
| UnitedHealthcare | Aligns with CMS | UHC follows the CPT hierarchy rule. Adds a frequency edit on 96375 (typically capped at units consistent with documented separate-drug pushes). Pre-filled syringes self-administered do not generate any 96374-family code — that scenario is Part D, not Part B. |
| Aetna (CVS Health) | Aligns with CMS | Aetna's CPB on infusion therapy mirrors the CPT hierarchy. CVS Specialty home-infusion claims bill the administration codes as part of the per-diem rather than CPT line items, so the 96374 family appears mostly on practice and HOPD claims. |
| Cigna / Express Scripts | Aligns with CMS | Cigna follows CPT and NCCI for the push family. Accredo home-infusion bills S-codes for the home-infusion per-diem; the 96374 family does not typically appear on those claims. |
| Humana | Aligns with CMS | MA-heavy book follows Medicare bundling and hierarchy rules by default. CenterWell Specialty and CenterWell Home Health follow the CMS HOPD restriction on 96376. |
| Denial pattern | What it means | Fix / appeal language |
|---|---|---|
| 96376 with POS 11 (office) | 96376 was billed from a physician office. 96376 is restricted to hospital outpatient department (HOPD) settings; offices cannot bill it. | Remove the 96376 line. The additional same-drug push is included in 96374 in office settings. Appeal language: “The original claim incorrectly reported 96376 from POS 11. Per AMA CPT and CMS IOM Pub 100-04 Ch.12 §30.5, 96376 is reportable only in hospital outpatient settings. The corrected claim retains 96374 for the initial push; the additional same-drug push is included in the 96374 practice-expense RVU and is not separately billable in POS 11.” |
| 96374 used for chemotherapy push | A chemotherapy or highly complex biologic agent was pushed and coded as 96374 instead of 96409. NCCI and MAC edits reclassify or deny. | Resubmit with 96409 as the initial chemo push (and 96411 for each additional chemo push). Appeal language: “The agent administered (e.g., vincristine, rituximab) meets the CPT definition of a chemotherapy / highly complex drug or biologic agent. Per AMA CPT 2026, the correct administration code is 96409 initial chemo push, not 96374. The corrected claim uses 96409.” |
| 96375 used for additional same-drug push | An additional sequential push of the SAME drug was coded as 96375. 96375 is for additional pushes of a NEW (different) drug only. | If HOPD, resubmit with 96376 instead of 96375. If physician office, remove the line — the additional same-drug push is not separately billable. Appeal language: “The original 96375 line was an additional push of the same drug as the prior push. Per AMA CPT, 96375 applies only to additional pushes of a new substance/drug. In HOPD, the correct code is 96376; in POS 11, the additional same-drug push is included in 96374 and is not separately billable.” |
| 96374 billed for a 22-minute administration | The administration was documented as 22 minutes with start and stop times, but the encounter was coded as a 96374 push. | Reclassify as an infusion. Use 96365 initial non-chemo infusion (or 96413 chemo infusion) for the first hour. Appeal language: “Per CMS Pub 100-04 Ch.12 §30.5, an administration of 16 minutes or more with documented start/stop times is an infusion, not a push. The medical record documents start at HH:MM and stop at HH:MM (22 minutes elapsed). The corrected claim uses 96365 (non-chemo) / 96413 (chemo) as appropriate.” |
| 96374 + 96365 both billed as initial | Both a push and an infusion were coded as the initial service on the same encounter. CMS hierarchy allows only one initial service per encounter. | Apply the CMS hierarchy: non-chemo infusion outranks non-chemo push, so 96365 becomes the initial service. The push is then 96375 (if a new drug) or 96376 (if same drug in HOPD). Appeal language: “Per CMS hierarchy rules in Pub 100-04 Ch.12 §30.5, only one initial administration service is reportable per encounter. The infusion (96365) outranks the push (96374) and is the initial service. The push is correctly reported as 96375 add-on, new substance/drug.” |
CMS guidance in Pub 100-04 Chapter 12 §30.5 treats an administration as an IV push when the drug is delivered by direct injection over a period of 15 minutes or less — or when the medical record does not document an infusion time and the provider administered the drug by direct manual injection. Administrations of 16 minutes or longer with documented start and stop times are billed as infusions (96365/96366 for non-chemo; 96413/96415 for chemo) rather than as IV push.
96374 is the initial IV push of a substance or drug — used when push is the sole service or the highest-ranked service of the encounter. 96375 is each additional sequential push of a NEW (different) drug on the same date, billed as an add-on. 96376 is each additional sequential push of the SAME drug already pushed earlier in the encounter — but only in a hospital outpatient department (HOPD) setting. Physician offices cannot bill 96376.
96376 is restricted by CPT and CMS to facility settings — specifically HOPDs (POS 19 or 22) — because the underlying RVU calculation assumes the facility setting's payment structure. In a physician office (POS 11), an additional push of the same drug is included in the practice-expense component of 96374 and is not separately billable. Billing 96376 with POS 11 is a recurring denial pattern that NCCI and MAC LCDs flag.
No. CPT separates therapeutic IV push (96374) from chemotherapy IV push (96409). The chemo push family — 96409 initial, 96411 each additional — is used when the agent meets CPT's chemotherapy or highly complex drug/biologic agent definition. Using 96374 for a vincristine or rituximab push is a CCI edit and the line will deny or reclassify.
96375 is a designated add-on code and is exempt from modifier 59 requirements when correctly billed sequentially with its primary (96374, 96365, 96409, 96413). NCCI typically does not require a 59/XU on the 96375 line. Modifier 59 or the X-modifier subset only enters when an otherwise-bundled service needs to be unbundled because it was a distinct procedural service, which is not the normal 96374+96375 sequencing scenario.
Yes, but the hierarchy matters. CMS hierarchy rules pick exactly one initial service per encounter, ranked: chemo infusion > chemo push > non-chemo infusion > non-chemo push > hydration. The highest-ranked service is the initial; everything else is an additional/sequential add-on. So an encounter with a Keytruda infusion (96413 initial) plus a Benadryl premed push becomes 96413 + 96375 — not 96374, because the chemo infusion outranks the push as the initial.
No. Hydration has its own CPT family — 96360 initial, 96361 each additional 31+ minutes — and is billed independently when medically necessary and documented separately from the push or infusion. An IV push of Solu-Medrol followed by a 500 mL hydration bag is 96374 + 96361 (or 96360 if hydration is the initial service after no higher-ranked service was billed). Combining hydration into the push line is a documentation-trail problem and a downcoding risk.
The medical record should show: the drug name and dose; the route (IV push); the time of administration (or at minimum the start time, since push is <16 minutes by definition); the staff member administering; and the clinical indication. For 96375 additional-new-drug pushes, document each drug separately with its own administration time. For 96376 same-drug subsequent pushes in HOPD, document the clinical reason a re-push was required and the time interval between pushes.
All sources are AMA CPT (commercially licensed), publicly available federal publications, or paraphrased from trade-association educational materials. The methodology by which we resolve source disagreements is described in the Methodology.