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ICD-10-CM 2027 diagnosis code

J84.1Other interstitial pulmonary diseases with fibrosis

Not billable — use a more specific code

J84.1 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About J84.1

J84.1 is the ICD-10-CM diagnosis code for other interstitial pulmonary diseases with fibrosis. 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 3 subcodes must be used instead.

Within J84 (other interstitial pulmonary diseases), J84.1 is specifically for other interstitial pulmonary diseases with fibrosis. Related codes cover alveolar and parieto-alveolar conditions (J84.0), lymphoid interstitial pneumonia (J84.2), other specified interstitial pulmonary diseases (J84.8) and interstitial pulmonary disease, unspecified (J84.9).

To report this condition, pick the subcode that matches the documentation: J84.10 (unspecified), J84.11 (pneumonia) and J84.17 (in diseases classified elsewhere).

Don't report J84.1 together with the conditions in its Excludes1 note: pulmonary fibrosis (chronic) following radiation (J70.1).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under J84.1

Coding notes

Excludes1Not coded here — never report together with this code
  • pulmonary fibrosis (chronic) following radiation (J70.1)
Code alsoTwo codes may be needed; sequencing depends on circumstances
  • , if applicable, pulmonary fibrosis (chronic) due to inhalation of chemicals, gases, fumes or vapors (J68.4)

Notes that apply from higher levels

Instructions written at a parent level also apply to J84.1.

› 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.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about J84.1

Is J84.1 billable?

No. J84.1 is a header code. Report one of its more specific subcodes instead.