ICD-10-CM 2027
ICD-10 code for Catarrh
From the official ICD-10-CM alphabetic index entry “Catarrh, catarrhal (acute) (febrile) (infectious) (inflammation)”. Page updated September 29, 2026.
About coding Catarrh
The ICD-10-CM code for Catarrh is J00 (Acute nasopharyngitis [common cold]). The official index lists 14 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on J00.
Don't report J00 together with the conditions in its Excludes1 note: acute pharyngitis (J02.-), acute sore throat NOS (J02.9), influenza virus with other respiratory manifestations (J09.X2, J10.1, J11.1), pharyngitis NOS (J02.9) and 2 more.
The conditions in its Excludes2 note aren't part of J00, but may be coded alongside it if the patient has both: allergic rhinitis (J30.1-J30.9), chronic pharyngitis (J31.2), chronic rhinitis (J31.0), chronic sore throat (J31.2) and 2 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific Catarrh codes (official index)
- bronchial
- chest
- chronic J31.0 — Chronic rhinitis
- due to congenital syphilis A50.03 — Early congenital syphilitic pharyngitis
- enteric
- eustachian H68.009 — Unspecified Eustachian salpingitis, unspecified ear
- fauces
- gastrointestinal
- gingivitis K05.00 — Acute gingivitis, plaque induced
- nonplaque induced K05.01 — Acute gingivitis, non-plaque induced
- plaque induced K05.00 — Acute gingivitis, plaque induced
- hay
- intestinal
- larynx, chronic J37.0 — Chronic laryngitis
- liver B15.9 — Hepatitis A without hepatic coma
- with hepatic coma B15.0 — Hepatitis A with hepatic coma
- lung
- middle ear, chronic
- mouth K12.1 — Other forms of stomatitis
- nasal (chronic)
- nasobronchial J31.1 — Chronic nasopharyngitis
- nasopharyngeal (chronic) J31.1 — Chronic nasopharyngitis
- acute J00 — Acute nasopharyngitis [common cold]
- pulmonary
- spring (eye) (vernal)
- summer (hay)
- throat J31.2 — Chronic pharyngitis
- tubotympanal
- chronic
Don't confuse with (Excludes1 for J00)
Common questions about Catarrh ICD-10 codes
What is the ICD-10 code for Catarrh?
- J00 — Acute nasopharyngitis [common cold]. More specific codes apply when the documentation supports them: J31.0, A50.03, H68.009, K05.00 and others below.
What is the ICD-10 code for chronic catarrh?
- J31.0 — Chronic rhinitis.
What is the ICD-10 code for eustachian catarrh?
- H68.009 — Unspecified Eustachian salpingitis, unspecified ear.
What is the ICD-10 code for gingivitis catarrh?
- K05.00 — Acute gingivitis, plaque induced.
What is the ICD-10 code for liver catarrh?
- B15.9 — Hepatitis A without hepatic coma.
What is the ICD-10 code for mouth catarrh?
- K12.1 — Other forms of stomatitis.
What is the ICD-10 code for nasobronchial catarrh?
- J31.1 — Chronic nasopharyngitis.
Is J00 billable?
- Yes. J00 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J00 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J00 as a principal diagnosis.
Is J00 a CC or MCC?
- No. J00 is neither a CC nor an MCC under MS-DRG v44.0.