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ICD-10-CM 2027 diagnosis code

J84.89Other specified interstitial pulmonary diseases

✓ Billable / specific

J84.89 is a valid, billable ICD-10-CM code for other specified interstitial pulmonary diseases. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Looking up by condition? See ICD-10 code for BOOP, ICD-10 code for Organizing pneumonia, ICD-10 code for Interstitial chronic pneumonitis.

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 J84.89

J84.89 is the ICD-10-CM diagnosis code for other specified interstitial pulmonary diseases. 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 billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within J84.8, choose J84.89 (Other specified interstitial pulmonary diseases) only when documentation doesn't support a more specific option: Lymphangioleiomyomatosis (J84.81), adult pulmonary Langerhans cell histiocytosis (J84.82), Surfactant mutations of the lung (J84.83) and other interstitial lung diseases of childhood (J84.84).

Don't report J84.89 together with the conditions in its Excludes1 note: cryptogenic organizing pneumonia (J84.116), idiopathic non-specific interstitial pneumonitis (J84.113), lipoid pneumonia, exogenous or unspecified (J69.1) and lymphoid interstitial pneumonia (J84.2).

Code first , if applicable: poisoning due to drug or toxin (T51-T65 with fifth or sixth character to indicate intent), for toxic pneumonopathy and underlying cause of pneumonopathy, if known.

Use an additional code, for adverse effect, to identify drug (T36-T50 with fifth or sixth character 5), if drug-induced.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 196 (Interstitial Lung Disease with MCC, relative weight 1.8336), DRG 197 (Interstitial Lung Disease with CC, relative weight 0.9492) and DRG 198 (Interstitial Lung Disease without CC/MCC, relative weight 0.7259), in MDC 04 (Diseases and Disorders of the Respiratory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

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

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

Coding notes

Applicable toConditions and synonyms classified to this code
  • Endogenous lipoid pneumonia
  • Interstitial pneumonitis
  • Non-specific interstitial pneumonitis NOS
  • Organizing pneumonia NOS
Excludes1Not coded here — never report together with this code
  • cryptogenic organizing pneumonia (J84.116)
  • idiopathic non-specific interstitial pneumonitis (J84.113)
  • lipoid pneumonia, exogenous or unspecified (J69.1)
  • lymphoid interstitial pneumonia (J84.2)
Code firstSequence the underlying condition first
  • , if applicable:
  • poisoning due to drug or toxin (T51-T65 with fifth or sixth character to indicate intent), for toxic pneumonopathy
  • underlying cause of pneumonopathy, if known
Use additional codeAdd a secondary code to fully describe the condition
  • code, for adverse effect, to identify drug (T36-T50 with fifth or sixth character 5), if drug-induced

Notes that apply from higher levels

Instructions written at a parent level also apply to J84.89.

› From J84.8 Other specified interstitial pulmonary diseases
Excludes1
  • exogenous lipoid pneumonia (J69.1)
  • unspecified lipoid pneumonia (J69.1)
› 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.

Alphabetic index entries

12 entries

Terms in the official ICD-10-CM index that lead to J84.89.

Codes whose notes reference J84.89

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 515Postinflammatory pulmonary fibrosisapproximate

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

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 J84.89

Is J84.89 billable?

Yes. J84.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can J84.89 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict J84.89 as a principal diagnosis.

Is J84.89 a CC or MCC?

No. J84.89 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does J84.89 group to?

J84.89 is used in the MS-DRG v44.0 logic for MS-DRG 196 (Interstitial Lung Disease with MCC), MS-DRG 197 (Interstitial Lung Disease with CC) and MS-DRG 198 (Interstitial Lung Disease without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for J84.89?

The CMS General Equivalence Mappings map J84.89 to ICD-9-CM 515.