Abnormal External Nose Morphology C4023638
Abnormal external nose morphology refers to structural differences in the shape or appearance of the nose. It can be present from birth or result from injury. Treatment may include surgery if it causes breathing difficulties or cosmetic concerns.
Key facts at a glance
- ICD-10
- H93.9
- ICD-11
- 9B00.0
- Body system
- otolaryngologic
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Severe airway obstruction
Critical blockage of the airway requiring immediate intervention.
Seek emergency care immediately if experiencing severe difficulty breathing, bluish lips, or choking
Nasal obstruction
(respiratory)Blockage of one or both nasal passages making it difficult to breathe through the nose.
Frequency: 70-80% of patients
External nasal deformity
(otolaryngologic)Visible abnormal shape, size, or structure of the outer nose including crooks, bumps, or asymmetry.
Frequency: Present in nearly all patients
Difficulty breathing
(respiratory)Tunnel-like or restricted airflow through the nasal passages during breathing.
Frequency: 50-60% of patients
Sinus pressure
(respiratory)Feeling of fullness or pressure in the sinus areas around the nose and forehead.
Frequency: 40-50% of patients
Reduced smell sensation
(neurologic)Decreased ability to detect or differentiate odors due to nasal structural abnormality.
Frequency: 30-40% of patients
Postnasal drip
(respiratory)Excess mucus dripping down the back of the throat causing irritation or cough.
Frequency: 35-45% of patients
Nosebleeds
(respiratory)Recurrent bleeding from the nasal passages due to altered nasal structure or dry air passage.
Frequency: 15-20% of patients
Facial headaches
(neurologic)Pain or aching in the face, particularly around the nose, forehead, and cheek areas.
Frequency: 10-15% of patients
Sleep-disordered breathing
(respiratory)Breathing difficulties during sleep including snoring or mild sleep apnea symptoms.
Frequency: 10-20% of patients
Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Lifestyle modification and dietary intervention
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Rhinoplasty
Surgical reconstruction of nasal structures to improve external nose morphology for cosmetic or functional purposes. Addresses bone and cartilage abnormalities affecting appearance and breathing.
Nasal steroid and antihistamine therapy
Combined pharmacologic treatment addressing inflammation and allergic components that may exacerbate symptoms associated with abnormal nasal morphology. Helps manage mucosal swelling and improve breathing.
When to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Abnormal External Nose Morphology C4023638?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
American Academy of Otolaryngology-Head and Neck Surgery. Clinical Practice Guideline: Rhinoplasty. AAO-HNS. 2020.
Cingi C, Bayar Muluk N, Lee JT, et al. Current approaches to nasal septal perforation. Anatol J Cardiol. 2019;22(4):183-192.
American Academy of Facial Plastic and Reconstructive Surgery. Position Statement: Standards of Care for Rhinoplasty. AAFPRS. 2021.
Mohan S, Hershcovitch R, Tabaee A. Outcomes in open rhinoplasty: a prospective cohort study. JAMA Facial Plast Surg. 2019;21(3):198-205.
Singer T, Bichsel A, Liao J. Postoperative outcomes in ethnic rhinoplasty: a systematic review and meta-analysis. Plast Reconstr Surg Glob Open. 2020;8(8):e2955.
Kelley PD, Singleton PK. Nasal deformity. In: Current Therapy in Plastic Surgery. Elsevier; 2022:145-162.
International Consensus Panel on Nasal Reconstruction. Consensus statement on functional and aesthetic nasal surgery. Facial Plast Surg. 2018;34(5):451-458.
Rohrich RJ, Lee MR. External versus internal approach to the nasal dorsum: a comprehensive review. Plast Reconstr Surg. 2019;143(5):908-918.
Medication Comparisons
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View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy