ID billing demands mastery of drug administration codes, HIV management, antimicrobial stewardship, and complex multi-system diagnoses. We're the only billing team built specifically for infectious disease physicians — with 97.2% first-pass accuracy.
Infectious disease billing involves drug administration tiers, HIV-specific confidentiality rules, complex multi-organism diagnosis coding, antimicrobial stewardship consultation billing, and inpatient critical care crossover — each with its own maze of CMS rules.
ID physicians administer some of the most expensive infusions in medicine — IV antibiotics, antifungals, antivirals, and immunoglobulins. Each requires correct J-code selection, administration code (96365–96379) sequencing, and medical necessity documentation.
HIV/AIDS claims involve state-specific confidentiality regulations, 42 CFR Part 2 protections, and separate payer credentialing requirements. Billing errors here don't just cost money — they risk patient privacy violations and compliance penalties.
Most billing companies have never heard of a J-code infusion hierarchy, don't know the difference between AMS consultation and a standard consult, and cannot navigate HIV confidentiality billing rules — resulting in systematic underbilling and compliance exposure.
ID physicians are among the most consulted specialists in hospital medicine. Billing inpatient consults post-2010 CMS policy change (99241–99245 eliminated for Medicare), correctly applying subsequent visit codes (99231–99233), and billing Antimicrobial Stewardship consultation services requires specialized knowledge that directly impacts hospital-based revenue.
ID diagnoses require organism-level ICD-10 specificity. Billing sepsis without the causative organism, or using an unspecified code when a specific organism has been identified, triggers automatic medical necessity denials from most payers.
Infectious disease has the highest concentration of complex, high-value billing codes in all of outpatient medicine. Each one is a revenue opportunity — and each one is an area where under-trained billers make costly, systematic errors.
Fix My Revenue LeaksDrug administration codes 96365–96379 must follow a strict initial → sequential → concurrent hierarchy. Most billers apply these incorrectly, billing all infusions as "initial" when only one can hold that status per encounter — triggering systematic underpayment and NCCI edit violations.
Revenue Impact: HighHIV/AIDS billing requires state-specific consent tracking and compliance with 42 CFR Part 2. Sending HIV diagnosis codes on standard EOBs without proper handling can violate patient confidentiality protections and expose your practice to regulatory penalties.
Compliance Risk: CriticalSince CMS eliminated consultation codes for Medicare in 2010, ID physicians must bill inpatient consults using hospital care codes (99221–99223 initial, 99231–99233 subsequent). Billers who don't know this bill at the wrong level — losing $80–$180 per hospital consult.
Revenue Impact: HighHIV/AIDS patients and immunocompromised patients qualify for Chronic Care Management codes 99490/99487. ID practices managing large HIV panels are leaving thousands monthly unclaimed. TCM codes (99495/99496) after hospital discharge are also widely ignored.
Revenue Impact: Very HighPayers increasingly require organism-specific ICD-10 codes for ID diagnoses. Billing "sepsis, unspecified" (A41.9) when blood cultures identified MRSA (A41.02) or Klebsiella (A41.53) triggers medical necessity denials. Our coders cross-reference lab reports on every claim.
Denial Risk: CriticalMany ID physicians provide formal AMS consultation services to hospitals — yet never bill for them because their billing team doesn't know these services are separately reimbursable. This represents a significant missed revenue stream, especially for physicians with formal AMS program appointments.
Revenue Impact: Medium–HighFrom drug administration coding to HIV panel management and hospital consult billing — we handle every component of your ID practice's revenue cycle with specialty-specific expertise that generalist billing companies simply cannot match.
Complete HIV billing management including Ryan White billing, ADAP coordination, payer-specific HIV plan requirements, and 42 CFR Part 2 compliant claim submission and EOB handling.
Expert J-code selection and administration code hierarchy (96365–96379) for all IV antibiotics, antifungals, antivirals, and immunoglobulins administered in office or outpatient settings.
Post-2010 CMS-compliant inpatient billing for ID consults using correct initial hospital care and subsequent visit codes, with critical care threshold analysis and AMS consultation capture.
Every denied claim is analyzed within 24 hours and appealed with ID-specific clinical documentation. Our database of payer-specific ID denial patterns means we win 94% of appealed claims.
Real-time dashboard access 24/7 with monthly reports covering net collections, drug administration code utilization, AR aging by payer, denial rate trends, and infusion revenue by drug class.
Browse the exact CPT, J-codes, and HCPCS codes our team handles every day for infectious disease practices. If you recognize these, you understand why general billing companies can't serve you well.
Initial intravenous infusion up to 1 hour for therapeutic, prophylactic, or diagnostic purposes
~$110–$148Each additional hour of infusion beyond the initial hour (add-on to 96365)
~$28–$36/hrSequential infusion (new drug/substance) up to 1 hour — requires separate drug and separate line
~$34–$42Concurrent infusion (add-on) — infused simultaneously with primary infusion
~$21–$28Injection, amphotericin B, 50mg — high-value antifungal J-code
Drug-specificInjection, acyclovir, 5mg — IV antiviral for HSV, VZV
Per mgInjection, cefazolin sodium, 500mg — commonly used IV cephalosporin
Per 500mgDrugs not otherwise classified — requires special documentation and prior authorization tracking
VariesAsymptomatic HIV infection status — requires 42 CFR compliant EOB handling
HIV-specificHuman immunodeficiency virus disease — AIDS diagnosis with highest privacy compliance requirements
HIV-specificCCM for HIV patients with 2+ chronic conditions — 20+ min/month non-face-to-face care
~$62/moHIV PrEP injection — Apretude/Vocabria. High-value J-code with prior auth requirements
High valueInjection, cidofovir, 375mg — used for CMV retinitis in HIV patients
Per doseHIV test, nucleic acid, blood, qualitative — preventive screening with specific payer billing rules
PreventiveTransitional care management — moderate MDM within 14 days of hospital discharge
~$165Transitional care management — high MDM within 7 days of hospital discharge
~$230Established patient, low MDM — frequently undercoded in ID outpatient follow-up visits
~$94Established patient, moderate MDM — appropriate level for most ID chronic management visits
~$145Established patient, high MDM — applicable in complex HIV, sepsis follow-up, or immunocompromised patients
~$207Initial hospital care code replacing consult codes post-2010 CMS policy
~$122High MDM initial hospital care — applicable for complex ID consults on critically ill patients
~$289Critical care time-based billing — when ID physician provides direct critical care management
~$305Daily subsequent hospital care, moderate MDM — most common code for ongoing ID inpatient consult
~$115Daily subsequent hospital care, high MDM — for complex ID patients with significant complications
~$167Sepsis due to methicillin-resistant Staphylococcus aureus — organism-specific coding required
High complexitySepsis due to Gram-negative infection — requires specific lab confirmation for compliant coding
High complexityCandidal bronchitis/pneumonia — specific fungal organism coding for correct J-code antifungal selection
Drug-linkedTuberculosis of lung, confirmed by sputum microscopy — mandatory organism specificity
Public healthPneumonia due to coronavirus disease 2019 — active with specific documentation requirements
ActiveMethicillin-resistant Staph aureus infection, unspecified site — triggers specific antibiotic billing
Drug-linkedHerpesviral infection — must use specific subtype codes to avoid medical necessity denials
Specificity req.Required secondary code for medical necessity of alternative antibiotic drug administration
Secondary codeWe've designed our onboarding specifically for busy ID practices. Full integration in 14 days. No billing gaps. No clinical disruption. Guaranteed.
We analyze 3–6 months of your existing claims data to identify every revenue gap — undercoded E/M visits, missed drug administration codes, unappealed denials, and unbilled CCM. You receive a detailed report with a projected annual recovery figure before you sign anything.
We integrate with your existing EHR in 3–5 business days — Epic, athenahealth, eClinicalWorks, NextGen, or any other system. No migrations, no new software. For HIV practices, we implement 42 CFR Part 2 compliant claim handling protocols from day one.
Every claim is coded by an AAPC-certified coder with ID specialty training — reviewing documentation for E/M level accuracy, drug administration hierarchy, ICD-10 organism specificity, and compliance. Claims submitted within 48 hours, ERA posting follows immediately.
Monthly performance reports with actionable analytics. Denial patterns are analyzed and eliminated. CCM-eligible patients are identified monthly. E/M benchmarks are tracked. Payer contract rates are monitored for underpayment. Your practice keeps improving — month over month, year over year.
Get a free, no-obligation revenue cycle audit. We'll show you exactly what your ID practice is losing and exactly how we'll recover it — before you sign a single contract.
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