H04.532 Neonatal obstruction of left nasolacrimal duct

Name of the Condition

• Neonatal Obstruction of Left Nasolacrimal Duct
• Also known as Congenital Nasolacrimal Duct Obstruction (CNLDO).

Summary

Neonatal obstruction of the left nasolacrimal duct is a condition occurring in newborns characterized by a blockage in the tear duct on the left side. This can cause excessive tearing and potential infection.

Causes

• Congenital blockage or malformation of the nasolacrimal duct.
• Mucosal buildup or membrane preventing the duct from opening.
• Structural anomalies present at birth.

Risk Factors

• Prematurity.
• Family history of nasolacrimal duct obstruction.
• Conditions affecting craniofacial structure.

Symptoms

• Constant tearing in one eye (left side).
• Mucus discharge from the affected eye.
• Redness or swelling around the eye.
• Crusting on the eyelids.

Diagnosis

• Physical examination by a pediatrician or ophthalmologist.
• Fluorescein dye disappearance test.
• Probing and irrigation of the nasolacrimal duct.

Treatment Options

• Observation and time, as many cases resolve spontaneously.
• Massage techniques over the lacrimal sac.
• Antibiotic eye drops if infection is present.
• Surgical intervention (probing) if conservative treatments fail.

Prognosis and Follow-Up

• Most infants improve without surgical intervention as they grow.
• Regular follow-up to monitor resolution of symptoms.
• Surgical probing is generally successful if needed.

Complications

• Persistent tearing and discomfort.
• Risk of recurrent eye infections if untreated.
• Rarely, chronic dacryocystitis (infection of the tear sac).

Lifestyle & Prevention

• Gentle cleaning of eye discharge to prevent irritation.
• No specific lifestyle changes or preventive measures as it is congenital.

When to Seek Professional Help

• Persistent tearing beyond a few months of age.
• Signs of infection such as redness, swelling, and discharge.
• Eye discomfort affecting the child’s well-being.

Additional Resources

• American Academy of Ophthalmology (aao.org)
• Pediatric Eye Disease Investigative Group (PEDIG)

Tips for Medical Coders

• Verify laterality; ensure coding accurately reflects the left-sided obstruction.
• Distinguish between neonatal and other age categories to avoid coding errors.
• Review documentation for signs of infection or additional related diagnoses.