J84.112 — Idiopathic pulmonary fibrosis
J84.112 is a billable, specific ICD-10-CM code for idiopathic pulmonary fibrosis. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Cryptogenic fibrosing alveolitis
- Idiopathic fibrosing alveolitis
Risk adjustment
J84.112 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 278 Idiopathic Pulmonary Fibrosis and Lung Involvement in Systemic Sclerosis0.818 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
J84.112 is named in 18 Medicare coverage policies — 18 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A55639Billing and Coding: Chemotherapy Agents for Non-Oncologic Conditions
- A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
- A56717Billing and Coding: Respiratory Therapy (Respiratory Care)
- A56730Billing and Coding: Respiratory Therapy and Oximetry Services
How J84.112 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 J84.112.
- Alveolitis›fibrosing(cryptogenic) (idiopathic)
- Fibrosis, fibrotic›lung›idiopathic
- Fibrosis, fibrotic›pulmonary›idiopathic
- Pneumonia›interstitial›usual
- Pneumonia›interstitial›usual›idiopathic
Related codes at this level
Codes that share J84.11. If J84.112 is not quite right, the correct code is usually one of these.
Questions about J84.112
- Is J84.112 a billable ICD-10-CM code?
- Yes. J84.112 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does J84.112 sit in the tabular list?
- Diseases of the respiratory system (J00-J99), in the block Other respiratory diseases principally affecting the interstitium (J80-J84).