J34.1 Cyst and mucocele of nose and nasal sinus

Billable ICD-10-CM code, FY2026.

Applies from J34 Other and unspecified disorders of nose and nasal sinuses

Excludes2 (not included here)

• varicose ulcer of nasal septum (I86.8)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 478.19 Other disease of nasal cavity and sinuses (approximate)

Diagnosis Index entries for J34.1

• Cyst (colloid) (mucous) (simple) (retention) › antrum
• Cyst (colloid) (mucous) (simple) (retention) › ethmoid sinus
• Cyst (colloid) (mucous) (simple) (retention) › frontal sinus
• Cyst (colloid) (mucous) (simple) (retention) › nose (turbinates)
• Cyst (colloid) (mucous) (simple) (retention) › nose (turbinates) › sinus
• Cyst (colloid) (mucous) (simple) (retention) › sinus (accessory) (nasal)
• Cyst (colloid) (mucous) (simple) (retention) › sphenoid sinus
• Cyst (colloid) (mucous) (simple) (retention) › turbinate (nose)
• Mucocele › nasal sinus
• Mucocele › nose
• Mucocele › sinus (accessory) (nasal)
• Mucocele › turbinate (bone) (middle) (nasal)

Nearby codes

• J34 Other and unspecified disorders of nose and nasal sinuses
• J34.0 Abscess, furuncle and carbuncle of nose
• J34.1 Cyst and mucocele of nose and nasal sinus (this code)
• J34.2 Deviated nasal septum
• J34.3 Hypertrophy of nasal turbinates
• J34.8 Other specified disorders of nose and nasal sinuses
• J34.81 Nasal mucositis (ulcerative)
• J34.82 Nasal valve collapse