R06.5 Mouth breathing

Billable ICD-10-CM code, FY2026.

Excludes2 (not included here)

• dry mouth NOS (R68.2)

Applies from R06 Abnormalities of breathing

Excludes1 (never code together)

• acute respiratory distress syndrome (J80)
• respiratory arrest (R09.2)
• respiratory arrest of newborn (P28.81)
• respiratory distress syndrome of newborn (P22.-)
• respiratory failure (J96.-)
• respiratory failure of newborn (P28.5)

MS-DRG index

Defines the logic of DRG(s) 154-156 in MDC 03.

Approximate ICD-9-CM (GEMs)

• 784.99 Other symptoms involving head and neck (approximate)

Code annotations containing back-references to R06.5

Back-references to R06

• Code Also: E20.810 Autosomal dominant hypocalcemia ("respiratory distress (J80, R06.-)")

Diagnosis Index entries for R06.5

• Breathing › mouth
• Snuffles (non-syphilitic)

Nearby codes

• R06.09 Other forms of dyspnea
• R06.1 Stridor
• R06.2 Wheezing
• R06.3 Periodic breathing
• R06.4 Hyperventilation
• R06.5 Mouth breathing (this code)
• R06.6 Hiccough
• R06.7 Sneezing
• R06.8 Other abnormalities of breathing
• R06.81 Apnea, not elsewhere classified
• R06.82 Tachypnea, not elsewhere classified