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J66 ICD-10-CA category: Airway disease due to specific organic dust

J66 isn’t a code on its own. Choose one of the 4 codes beneath it, the one the documentation supports.

Official description

J66

Airway disease due to specific organic dust

ICD-10-CA · Canada

Codes in J66

J66 isn’t a code on its own. Open the code that matches what the note documents.

J66.0ByssinosisJ66.1Flax-dresser diseaseJ66.2CannabinosisJ66.8Airway disease due to other specific organic dusts

Notes for J66

As CIHI prints them, with any note J66 takes from the headings above it.

Excludes

Conditions classified elsewhere.

  • Bagassosis (J67.1)farmer's lung (J67.0)hypersensitivity pneumonitis due to organic dust (J67.-)reactive airways dysfunction syndrome (J68.3)
  • Asthma classified to J45.-From J60-J70 Lung diseases due to external agents
  • Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 10: Diseases of the respiratory system (J00-J99)

Note

  • When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g., tracheobronchitis to bronchitis in J40).From Chapter 10: Diseases of the respiratory system (J00-J99)

Where J66 sits

  1. 1ChapterChapter 10: Diseases of the respiratory system (J00-J99)
  2. 2Block J60-J70Lung diseases due to external agents
  3. 3Category J66Airway disease due to specific organic dust

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See J66 in the CIHI source

Frequently asked questions

Is J66 a valid ICD-10-CA code?

No. J66 (Airway disease due to specific organic dust) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 4 codes; record the one the documentation supports.

Where is J66 in ICD-10-CA?

J66 sits under J60-J70 Lung diseases due to external agents, within Chapter 10: Diseases of the respiratory system (J00-J99).

What coding notes apply to J66?

ICD-10-CA lists Excludes, Note notes for J66, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside J66

J60Coalworker's pneumoconiosisJ61Pneumoconiosis due to asbestos and other mineral fibresJ62Pneumoconiosis due to dust containing silicaJ63Pneumoconiosis due to other inorganic dustsJ64Unspecified pneumoconiosisJ65Pneumoconiosis associated with tuberculosisJ67Hypersensitivity pneumonitis due to organic dustJ68Respiratory conditions due to inhalation of chemicals, gases, fumes and vapoursJ69Pneumonitis due to solids and liquidsJ70Respiratory conditions due to other external agents