A78: Q fever
A78, Q fever, is listed as a covered diagnosis in 4 Medicare billing and coding articles that apply to 5 HCPCS Level II codes, including G0278 (Iliac and/or femoral artery angiography, non-selective…), G0269 (Placement of occlusive device into either a venous or…), G0238 (Therapeutic procedures to improve respiratory function…). The articles come from 4 Medicare contractors. A listed diagnosis supports medical necessity only; coverage still depends on the LCD's criteria and on documentation in the medical record.
HCPCS Level II codes with A78 as a covered diagnosis
| Code | Description | Medicare coverage | DMEPOS fee 2026 (state range) | Articles listing it |
|---|---|---|---|---|
| G0278 | Iliac and/or femoral artery angiography, non-selective, bilateral or ipsilateral to catheter insertion, performed at the same time as cardiac catheterization and/or coronary angiography, includes positioning or placement of the catheter in the distal aorta or ipsilateral femoral or iliac artery, injection of dye, production of permanent images, and radiologic supervision and interpretation (list separately in addition to primary procedure) | Carrier judgment | — | 2 |
| G0269 | Placement of occlusive device into either a venous or arterial access site, post surgical or interventional procedure (e.g., angioseal plug, vascular plug) | Special coverage instructions apply | — | 2 |
| G0238 | Therapeutic procedures to improve respiratory function, other than described by g0237, one on one, face to face, per 15 minutes (includes monitoring) | Carrier judgment | — | 2 |
| G0237 | Therapeutic procedures to increase strength or endurance of respiratory muscles, face to face, one on one, each 15 minutes (includes monitoring) | Carrier judgment | — | 2 |
| G0239 | Therapeutic procedures to improve respiratory function or increase strength or endurance of respiratory muscles, two or more individuals (includes monitoring) | Carrier judgment | — | 2 |
Medicare policy articles listing A78
- A56500: Billing and Coding: Cardiac Catheterization and Coronary Angiography (CGS Administrators, LLC (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L33557, L33959
- A52850: Billing and Coding: Cardiac Catheterization and Coronary Angiography (Wellpoint Federal (MAC - Part A, MAC - Part B); 2 Level II codes). LCD with the same title: L33557, L33959
- A56717: Billing and Coding: Respiratory Therapy (Respiratory Care) (Palmetto GBA (MAC - Part A); 3 Level II codes). LCD with the same title: L34430
- A57224: Billing and Coding: Respiratory Care (Noridian Healthcare Solutions, LLC (MAC - Part A, MAC - Part B); 3 Level II codes). LCD with the same title: L34149
A diagnosis listed as covered in a billing and coding article supports medical necessity for the article's codes; it does not guarantee payment. Coverage depends on the LCD's criteria, the contractor's jurisdiction and documentation in the medical record.
Frequently asked questions
Does Medicare cover A78 (Q fever)?
Medicare covers items and services, not diagnoses. 4 Medicare billing and coding articles list A78 as a covered diagnosis for 5 HCPCS Level II codes: the diagnosis can support medical necessity for those codes, but payment still depends on the LCD's coverage criteria and the medical record.
Which HCPCS codes can be billed with ICD-10 A78?
The Level II codes from the policies most specific to this diagnosis are G0278 (Iliac and/or femoral artery angiography, non-selective…, 2 articles); G0269 (Placement of occlusive device into either a venous or…, 2 articles); G0238 (Therapeutic procedures to improve respiratory function…, 2 articles); G0237 (Therapeutic procedures to increase strength or endurance…, 2 articles); G0239 (Therapeutic procedures to improve respiratory function or…, 2 articles). Code choice depends on the item supplied; check each code's descriptor.
Which Medicare policy articles list A78?
A56500 (Billing and Coding: Cardiac Catheterization and Coronary Angiography); A52850 (Billing and Coding: Cardiac Catheterization and Coronary Angiography); A56717 (Billing and Coding: Respiratory Therapy (Respiratory Care)), and 1 more article.
What is ICD-10-CM code A78?
A78 is the ICD-10-CM code for Q fever, in category A78 (Q fever), chapter 1: Certain infectious and parasitic diseases.
Next steps
- Run a reimbursement report for a device billed under G0278
- Watch G0278 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for G0278
Sources: CMS Medicare Coverage Database billing and coding articles (covered ICD-10 code lists and HCPCS links); ICD-10-CM FY2026; CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026 (non-rural state fees). Not billing or legal advice.
Chapter 1: Certain infectious and parasitic diseases · All diagnoses · HCPCS lookup