ICD-10-CM 2027
ICD-10 code for nasopharyngeal chronic catarrh
From the official ICD-10-CM alphabetic index entry “Catarrh, catarrhal (acute) (febrile) (infectious) (inflammation) › nasopharyngeal (chronic)”. Page updated September 29, 2026.
About coding nasopharyngeal chronic catarrh
The ICD-10-CM code for nasopharyngeal chronic catarrh is J31.1 (Chronic nasopharyngitis). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on J31.1.
Within J31 (chronic rhinitis, nasopharyngitis and pharyngitis), J31.1 is specifically for chronic nasopharyngitis. Related codes cover rhinitis (J31.0) and pharyngitis (J31.2).
The conditions in its Excludes2 note aren't part of J31.1, but may be coded alongside it if the patient has both: acute nasopharyngitis (J00).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific nasopharyngeal chronic catarrh codes (official index)
- acute J00 — Acute nasopharyngitis [common cold]
Common questions about nasopharyngeal chronic catarrh ICD-10 codes
What is the ICD-10 code for nasopharyngeal chronic catarrh?
- J31.1 — Chronic nasopharyngitis. More specific codes apply when the documentation supports them: J00.
What is the ICD-10 code for acute nasopharyngeal chronic catarrh?
- J00 — Acute nasopharyngitis [common cold].
Is J31.1 billable?
- Yes. J31.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J31.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J31.1 as a principal diagnosis.
Is J31.1 a CC or MCC?
- No. J31.1 is neither a CC nor an MCC under MS-DRG v44.0.