ICD-10-CM 2027
ICD-10 code for Pharyngotracheitis
From the official ICD-10-CM alphabetic index entry “Pharyngotracheitis, chronic”. Page updated September 29, 2026.
About coding Pharyngotracheitis
The ICD-10-CM code for Pharyngotracheitis is J42 (Unspecified chronic bronchitis).
Don't report J42 together with the conditions in its Excludes1 note: bronchiolitis obliterans and bronchiolitis obliterans syndrome (J44.81), chronic asthmatic bronchitis (J44.-), chronic bronchitis with airways obstruction (J44.-), chronic emphysematous bronchitis (J44.-) and 2 more.
Use an additional code to identify: exposure to environmental tobacco smoke (Z77.22), exposure to tobacco smoke in the perinatal period (P96.81), history of tobacco dependence (Z87.891), occupational exposure to environmental tobacco smoke (Z57.31), tobacco dependence (F17.-) and 1 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for J42)
Common questions about Pharyngotracheitis ICD-10 codes
What is the ICD-10 code for Pharyngotracheitis?
- J42 — Unspecified chronic bronchitis.
Is J42 billable?
- Yes. J42 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J42 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J42 as a principal diagnosis.
Is J42 a CC or MCC?
- No. J42 is neither a CC nor an MCC under MS-DRG v44.0.