Allergy
Allergy / Immunology
Three revenue pillars: percutaneous and intradermal allergy testing (per-test billing), immunotherapy preparation and administration (95115-95170), and biologic injection management. Testing codes are billed per-test, so unit counts matter.
Top billed codes
The codes that drive revenue in this specialty. Click any code for documentation requirements, modifiers, and pitfalls.
| Code | Description | wRVU | Total RVU | Medicare $ | |
|---|---|---|---|---|---|
| 99204 | Office o/p new mod 45 min New patient with a moderately complex problem requiring comprehensive history, exam, and drug management. The default new-patient code in primary care and most subspecialties. | 2.60 | 5.31 | $177 | Details → |
| 99214 | Office o/p est mod 30 min The workhorse code. Two or more chronic problems with progression/treatment changes, OR one undiagnosed new problem with uncertain prognosis, OR prescription drug management. | 1.92 | 4.06 | $136 | Details → |
| 95004 | Percutaneous allergy test (per test) Skin prick allergy testing. Billed per-test (per antigen). | 0.01 | 0.14 | $5 | Details → |
| 95024 | Intradermal allergy test (per test) Intradermal allergy testing after negative skin prick. Per-test billing. | 0.01 | 0.17 | $6 | Details → |
| 95044 | Patch test allergy (per test) Patch testing for contact dermatitis. Per-test billing. | 0.01 | 0.19 | $6 | Details → |
| 95115 | Allergen injection, single Single allergen injection. Use 95117 for 2+ injections same encounter. | 0.07 | 0.28 | $9 | Details → |
| 95117 | Allergen injection, 2 or more Two or more allergen injections at one encounter. Not per arm — per encounter. | 0.12 | 0.40 | $13 | Details → |
| 95165 | Antigen preparation, per dose Preparation of allergen extracts. Billed per dose prepared (vial × doses per vial). | 0.07 | 0.39 | $13 | Details → |
| 95180 | Rapid desensitization, per hour Inpatient or office desensitization protocol (penicillin, aspirin, biologics). | 1.00 | 1.62 | $54 | Details → |
Pro feature
Unlock the full Allergy coding guide
Scenarios that show how the codes stack on real encounters, payer-specific modifier rules, and bundling pitfalls for Allergy are part of the Pro tier. Infectious Disease stays free as a sample.
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Educational reference, not billing or legal advice. Coverage curated, not exhaustive. Verify against payer contracts.