ICD-10-CM 2027 diagnosis code

J84.17Other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere

Not billable — use a more specific code

J84.17 is a header code, so it can't be reported by itself. Choose one of the 2 more specific codes beneath it.Short description: Oth interstit pulmon dis w fibrosis in dis classd elswhr

Code last changed in FY2021 (effective October 1, 2020). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About J84.17

J84.17 is the ICD-10-CM diagnosis code for other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere. It belongs to category J84 (other interstitial pulmonary diseases), block J80-J84 (other respiratory diseases principally affecting the interstitium) and chapter 10 (diseases of the respiratory system). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within J84.1 (other interstitial pulmonary diseases with fibrosis), J84.17 is specifically for other interstitial pulmonary diseases with fibrosis in diseases classified elsewhere. Related codes cover pulmonary fibrosis, unspecified (J84.10) and idiopathic interstitial pneumonia (J84.11).

To report this condition, pick the subcode that matches the documentation: J84.170 (elsewhere) and J84.178 (elsewhere).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2021 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 515 (postinflammatory pulmonary fibrosis).

Specific codes under J84.17

Notes that apply from higher levels

Instructions written at a parent level also apply to J84.17.

› From J84.1 Other interstitial pulmonary diseases with fibrosis

Excludes1

pulmonary fibrosis (chronic) following radiation (J70.1)

Code also

, if applicable, pulmonary fibrosis (chronic) due to inhalation of chemicals, gases, fumes or vapors (J68.4)

› From J84 Other interstitial pulmonary diseases

Excludes1

drug-induced interstitial lung disorders (J70.2-J70.4)
interstitial emphysema (J98.2)

Excludes2

lung diseases due to external agents (J60-J70)

Code also

, if applicable, associated condition

Broader instructions also apply from Chapter 10: Diseases of the respiratory system.

ICD-9-CM equivalent

Converter →

515Postinflammatory pulmonary fibrosisapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
FY2021 (effective 10/1/2020): Expanded — no longer billable

Common questions about J84.17

Is J84.17 billable?: No. J84.17 is a header code. Report one of its more specific subcodes instead.
What is the ICD-9 code for J84.17?: The CMS General Equivalence Mappings map J84.17 to ICD-9-CM 515.