J98.51 — Mediastinitis
J98.51 is a billable, specific ICD-10-CM code for mediastinitis. It is valid for submission on a claim.
Code first
The underlying condition must be sequenced before this code.
- underlying condition, if applicable, such as postoperative mediastinitis (T81.-)
Risk adjustment
J98.51 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
J98.51 is named in 6 Medicare coverage policies — 6 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
- A56625Billing and Coding: Echocardiography
- A56717Billing and Coding: Respiratory Therapy (Respiratory Care)
- A56730Billing and Coding: Respiratory Therapy and Oximetry Services
How J98.51 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 J98.51.
- Mediastinitis(acute) (chronic)
- Infection, infected, infective›mediastinum
Related codes at this level
Codes that share J98.5. If J98.51 is not quite right, the correct code is usually one of these.
Questions about J98.51
- Is J98.51 a billable ICD-10-CM code?
- Yes. J98.51 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does J98.51 sit in the tabular list?
- Diseases of the respiratory system (J00-J99), in the block Other diseases of the respiratory system (J96-J99).