CPT 95115: single allergy injection, without the extract
95115 reports the professional work of giving one allergen immunotherapy injection, not the extract in the syringe. The extract is billed on its own line, and Medicare caps 95115 at one unit a day.
Written by Salman Saeed, CEO and Co-Founder · Reviewed by a Certified Medical Coder · Last reviewed October 2026In short: 95115 pays for the shot only, so the vial is billed separately with doses as units. One unit a day is the Medicare limit, and a visit on the same day needs modifier 25 and a reason beyond the shot.
What does CPT 95115 report?
95115 is the CPT code for administering one allergen immunotherapy injection. The CMS fee schedule file labels it "Immunotherapy one injection" and its neighbor 95117 "Immunotherapy injections", so one shot at a visit is 95115 and the multiple-shot code is a different line.
Chapter 12, section 200 B, of the Claims Processing Manual calls 95115 and 95117 the injection-only codes. The antigen itself and its preparation sit in a separate range, 95144 through 95170, and the injection codes do not include them.
| Item in RVU26D | 95115 |
|---|---|
| Payment status | A (active, paid separately) |
| Work RVU | 0.00 |
| Total RVU, non-facility | 0.31 |
| Professional/technical indicator | 5 (incident-to code) |
| Global period | XXX |
| Practitioner MUE, effective 10-01-2026 | 1 (indicator 2, policy basis) |
Indicator 5 means the service is covered as incident to a physician's service when auxiliary staff give it under direct personal supervision, and the file adds that A/B MACs do not pay for it for hospital inpatients or hospital outpatient department patients. The incident-to rules page covers the supervision side.
How do I bill the extract with the injection?
Bill both lines: 95115 for the shot and the antigen code for the vial. Chapter 12, section 200 B, says that when the physician provides both services, both codes are billed, including for allergists who work from treatment boards.
Antigen units are doses. The manual says the antigen codes are priced for a single dose, so the doses go in the units field, and the number is the doses planned when the vial was prepared. If doses are later adjusted for a reaction, the billed number does not change and the MAC does not recoup.
When 95115 is billed with 95165 or with single-dose vial code 95144, Medicare pays the injection code plus the 95165 rate. Code 95144 is meant only when the physician supplies antigen for another entity to inject. The manual also says combined injection-and-extract codes 95120 through 95134 are not valid for Medicare.
A clinic mixes a multiple-dose vial planned for 10 doses and gives the first shot today. Today's claim has 95115 with 1 unit and 95165 with 10 units. Later shots from that vial carry 95115 only.
How many units of 95115 can I bill?
One. The practitioner MUE for 95115 is 1 per date of service, effective October 1, 2026, with an adjudication indicator of 2 and the basis shown as the code descriptor or CPT instruction. A second unit denies on the line.
A patient who receives more than one injection at the visit is reported with the plural-injection code 95117 instead, not with 2 units of 95115. Check the labels in the file before choosing: one injection is 95115, injections is 95117.
Can I bill an office visit with an allergy shot?
Not unless the visit is a separate service. Chapter 12, section 200 C, says visits should not be billed with 95115 or 95117 unless the visit represents another separately identifiable service, and that the biller then adds modifier 25 to the visit code.
NCCI Chapter XI, section K, adds that obtaining informed consent is part of the immunotherapy service and is not an E/M. A nurse-only shot visit with a vitals check and a reaction watch is the shot, nothing more.
Testing and shots on one date are unusual. NCCI says allergy testing is generally not reported the same day as immunotherapy unless additional allergens are tested, and 95004 is not billed for checking the potency of a vial.
How does 95115 appear on the claim?
On the CMS-1500, Item 24D carries 95115 and Item 24G carries 1. The vial line, 95165, goes on its own line with the dose count in Item 24G. Place of service is usually 11 for the office, from the CMS place of service code set.
The shot is often given by a nurse, so the rendering and billing provider on the claim must match the supervision rule for incident-to services. See allergy and immunology billing for the full testing, extract and shot workflow.
Where do injection units appear for 95115?
An allergy shot is one line, 95115 in Item 24D with 1 unit in Item 24G and a pointer in Item 24E to the allergy diagnosis. The extract is billed on its own line with the dose units. The injection is for one shot, and two shots on a date use a different code.
RVU26D gives 95115 status A, and the MUE table allows 1 per date with indicator 2, a policy edit.
Example: A patient gets one shot on 10/15. Line 1 is 95115, pointer A (J30.1), 1 unit, $24.00. Line 2 is the extract with the dose units. A second 95115 line for the same patient and date is denied as a duplicate under OA-18.
Why is 95115 denied?
| CARC | What X12 says | What usually causes it |
|---|---|---|
| 151 | Payment adjusted because the payer deems the information submitted does not support this many/frequency of services | Two units on one line, or a second shot billed as 95115 instead of the plural code |
| 97 | The benefit for this service is included in the payment/allowance for another service/procedure that has already been adjudicated | Visit billed with the shot and no modifier 25 |
| 4 | The procedure code is inconsistent with the modifier used | Modifier 25 put on the shot instead of the visit |
| B15 | This service/procedure requires that a qualifying service/procedure be received and covered | Shot billed before any extract line was paid |
If these denials keep coming back, our denial management team can work them. See also CO-97 and CO-151.
Related codes
- Physician Fee Schedule relative value files, RVU26D (October 2026) · CMS
- Medicare NCCI Medically Unlikely Edits, practitioner table, effective 10-01-2026 · CMS
- 2026 NCCI Medicare Policy Manual, Chapter XI: Medicine, Evaluation and Management Services · CMS
- Medicare Claims Processing Manual, Chapter 12: Physicians/Nonphysician Practitioners · CMS
- Medicare Claims Processing Manual, Chapter 26: Completing and Processing Form CMS-1500 Data Set · CMS
- Claim Adjustment Reason Codes · X12
- Place of service code set · CMS
We check every rule, code and deadline against the official source. See our editorial policy.
Common questions
Straight answers from the team that does the work.
Ask a billing lead directly. A 20-minute call, Monday to Friday, 9am to 5pm Eastern.
01How do I bill a single allergy injection?
Report 95115 with 1 unit for the shot, and bill the extract on its own line, usually 95165 with doses as units. 95115 covers the injection work only. A visit on the same day needs modifier 25 and a separate reason.
02Is the allergy extract included in 95115?
No. Chapter 12 of the Medicare Claims Processing Manual says 95115 and 95117 are injection-only codes and the antigen and its preparation are billed separately, in the 95144 through 95170 range. When both services are provided, both codes are billed.
03How many units of 95115 can I bill per day?
One. The Medicare practitioner MUE for 95115, effective October 1, 2026, is 1 per date of service, so a second unit on the same line can deny as above the edit limit. More than one injection at a visit is reported with 95117, the code the CMS file labels as multiple injections.
04Does a same-day visit with 95115 need modifier 25?
Only when the visit is significant and separately identifiable, with modifier 25 on the visit line. Medicare Claims Processing Manual Chapter 12 says visits should not be billed with 95115 unless they represent another separate service. Obtaining informed consent is part of the shot and is not a visit, according to NCCI Chapter XI.
05Can a nurse give the injection for 95115?
The CMS file marks 95115 with indicator 5, a service covered incident to a physician's service when auxiliary staff give it under direct personal supervision. A/B MACs do not pay for it when it is given to patients in a hospital outpatient department, so the setting matters.
Allergy shot claims denying?
We check the injection line, the dose units on the vial line and the visit modifier before the claim goes out.