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R06.5

✓ Billable

Mouth breathing

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

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❌ Excludes1

inherited from R06

Rules from parent category R06: Abnormalities of breathing

  • • 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)

⚠️ Excludes2

direct

May be coded together if both conditions coexist

  • • dry mouth NOS (R68.2)

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Code Information

CodeR06.5
BillableYes
ParentR06
CategorySymptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Excludes16 rule(s)
Excludes21 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)