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ICD-10-CM 2027 diagnosis code

J66.2Cannabinosis

✓ Billable / specific

J66.2 is a valid, billable ICD-10-CM code for cannabinosis. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

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 J66.2

J66.2 is the ICD-10-CM diagnosis code for Cannabinosis. It belongs to category J66 (airway disease due to specific organic dust), block J60-J70 (lung diseases due to external agents) 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 J66 (airway disease due to specific organic dust), J66.2 is specifically for Cannabinosis. Related codes cover Byssinosis (J66.0), Flax-dressers' disease (J66.1) and airway disease due to other specific organic dusts (J66.8).

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 504 (pneumonopathy due to inhalation of other dust).

Notes that apply from higher levels

Instructions written at a parent level also apply to J66.2.

› From J66 Airway disease due to specific organic dust
Excludes2
  • allergic alveolitis (J67.-)
  • asbestosis (J61)
  • bagassosis (J67.1)
  • farmer's lung (J67.0)
  • hypersensitivity pneumonitis due to organic dust (J67.-)
  • reactive airways dysfunction syndrome (J68.3)

Broader instructions also apply from J60-J70 Lung diseases due to external agents and Chapter 10: Diseases of the respiratory system.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to J66.2.

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 →
  • 504Pneumonopathy due to inhalation of other dustapproximate

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 J66.2

Is J66.2 billable?

Yes. J66.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can J66.2 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict J66.2 as a principal diagnosis.

Is J66.2 a CC or MCC?

No. J66.2 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does J66.2 group to?

J66.2 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 J66.2?

The CMS General Equivalence Mappings map J66.2 to ICD-9-CM 504.