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J84.10 — Pulmonary fibrosis, unspecified
J84.10
What this code means
Pulmonary fibrosis is scarring and stiffening of the lung tissue, making breathing progressively harder.
Also called: pulmonary fibrosis, lung fibrosis, ipf.
When this code is used
Used for pulmonary fibrosis when the type is not specified.
Where it sits in ICD-10-CM
Code J84.10 belongs to Chapter 10: Diseases of the respiratory system, which covers codes J00–J99 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Related symptoms
Related anatomy
Watch: related videos
Frequently asked questions
What is ICD-10-CM code J84.10?
J84.10 is the ICD-10-CM diagnosis code for “Pulmonary fibrosis, unspecified”. Pulmonary fibrosis is scarring and stiffening of the lung tissue, making breathing progressively harder.
When is code J84.10 used?
Used for pulmonary fibrosis when the type is not specified. It belongs to Chapter 10 of ICD-10-CM (Diseases of the respiratory system).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.