J84.170 — Interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere
J84.170 is a billable, specific ICD-10-CM code for interstitial lung disease with progressive fibrotic phenotype in diseases classified elsewhere. It is valid for submission on a claim.
Code first
The underlying condition must be sequenced before this code.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Progressive fibrotic interstitial lung disease
Risk adjustment
J84.170 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
J84.170 is named in 14 Medicare coverage policies — 14 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 J84.170 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 J84.170.
- Disease, diseased›lung›interstitial›with progressive fibrotic phenotype, in diseases classified elsewhere
Related codes at this level
Codes that share J84.17. If J84.170 is not quite right, the correct code is usually one of these.
Questions about J84.170
- Is J84.170 a billable ICD-10-CM code?
- Yes. J84.170 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does J84.170 sit in the tabular list?
- Diseases of the respiratory system (J00-J99), in the block Other respiratory diseases principally affecting the interstitium (J80-J84).