A77.49 — Other ehrlichiosis
A77.49 is a billable, specific ICD-10-CM code for other ehrlichiosis. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Ehrlichiosis due to E. ewingii
- Ehrlichiosis due to E. muris euclairensis
Risk adjustment
A77.49 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
A77.49 is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A58710Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
- A58720Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
- A58747Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
- A58761Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing
How A77.49 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to A77.49.
- Anaplasmosis [A. phagocytophilum]›human
- Ehrlichiosis›due to›E. ewingii
- Ehrlichiosis›due to›E. muris euclairensis
- Ehrlichiosis›due to›specified organism NEC
- Fever›spotted›Ehrlichiosis›due to›specified organism NEC
Related codes at this level
Codes that share A77.4. If A77.49 is not quite right, the correct code is usually one of these.
Questions about A77.49
- Is A77.49 a billable ICD-10-CM code?
- Yes. A77.49 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does A77.49 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Rickettsioses (A75-A79).