FY2027
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Excludes1 pair

J04.0 vs J05.0

J04.0 and J05.0 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.

The official note, declared on J04.0
acute obstructive laryngitis (J05.0)
J04.0

Acute laryngitis

Billable
Chapter 10
Diseases of the respiratory system
Section
J00-J06
Use when the record says
  • Edematous laryngitis (acute)
  • Laryngitis (acute) NOS
  • Subglottic laryngitis (acute)
  • Suppurative laryngitis (acute)
  • Ulcerative laryngitis (acute)
Indexed under
  • Glottitis
  • Laryngitis (acute) (edematous) (fibrinous) (infective) (infiltrative) (malignant) (membranous) (phlegmonous) (pneumococcal) (pseudomembranous) (septic) (subglottic) (suppurative) (ulcerative)
  • Gangrene, gangrenous › laryngitis
  • Laryngitis › Hemophilus influenzae
  • Laryngitis › H. influenzae
J05.0

Acute obstructive laryngitis [croup]

Billable
Chapter 10
Diseases of the respiratory system
Section
J00-J06
Use when the record says
  • Obstructive laryngitis (acute) NOS
  • Obstructive laryngotracheitis NOS
Indexed under
  • Croup, croupous (catarrhal) (infectious) (inflammatory) (nondiphtheritic)
  • Angina › croupous
  • Angina › membranous
  • Angina › trachealis
  • Laryngitis › obstructive

Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027