J4A.0 — Restrictive allograft syndrome
J4A.0 is a billable, specific ICD-10-CM code for restrictive allograft syndrome. It is valid for submission on a claim.
Code also
Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.
- , if applicable, for mixed chronic lung allograft dysfunction, bronchiolitis obliterans syndrome (J44.81)
Risk adjustment
J4A.0 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 276 Lung Transplant Status/Complications2.531 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
J4A.0 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.
- A57115Billing and Coding: Noninvasive Ear or Pulse Oximetry For Oxygen Saturation
- A57115Billing and Coding: Noninvasive Ear or Pulse Oximetry For Oxygen Saturation
How J4A.0 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 J4A.0.
- Syndrome›restrictive allograft
- Dysfunction›chronic›lung allograft›mixed
Related codes at this level
Codes that share J4A. If J4A.0 is not quite right, the correct code is usually one of these.
Questions about J4A.0
- Is J4A.0 a billable ICD-10-CM code?
- Yes. J4A.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does J4A.0 sit in the tabular list?
- Diseases of the respiratory system (J00-J99), in the block Chronic lower respiratory diseases (J40-J4A).