A69.20 — Lyme disease, unspecified
A69.20 is a billable, specific ICD-10-CM code for lyme disease, unspecified. It is valid for submission on a claim.
Risk adjustment
A69.20 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
A69.20 is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56625Billing and Coding: Echocardiography
- A56781Billing and Coding: Transthoracic Echocardiography (TTE)
How A69.20 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 A69.20.
- Lyme disease
- Disease, diseased›Lyme
- Erythema, erythematous›chronicum migrans(Borrelia burgdorferi)
- Infection, infected, infective›Borrelia bergdorfi
- Erythema, erythematous›migrans›chronicum
Related codes at this level
Codes that share A69.2. If A69.20 is not quite right, the correct code is usually one of these.
Questions about A69.20
- Is A69.20 a billable ICD-10-CM code?
- Yes. A69.20 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does A69.20 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Other spirochetal diseases (A65-A69).