ICD-10-CM Billable Code

A36.86

Diphtheritic conjunctivitis

Clinical Classification Guidelines

Medical Intelligence & Overview

Diphtheritic conjunctivitis is a rare but serious eye infection caused by the bacteria responsible for diphtheria. This condition affects the conjunctiva, the thin layer of tissue covering the white part of the eye and lining the inside of the eyelids. Recognized under ICD-10 code A36.86, diphtheritic conjunctivitis can lead to significant discomfort and potential complications if not diagnosed and treated promptly. Due to its association with diphtheria, a vaccine-preventable disease, understanding this condition is important for awareness and early intervention.

Causes & Symptoms

Clinical Causes: Infection with *Corynebacterium diphtheriae* bacteria Transmission primarily through respiratory droplets from coughing or sneezing of an infected person Close contact with contaminated objects or surfaces Inadequate vaccination against diphtheria

Key Symptoms: Redness and swelling of the conjunctiva (conjunctivitis) Discharge from the eyes, which may be thick and grayish or yellowish Eye discomfort, itching, or burning sensation Sensitivity to light (photophobia) Watery eyes or tearing Possible formation of pseudomembranes on the conjunctiva (grayish membrane covering the eye's surface) Swelling or tenderness around the eyelids

Diagnostic & Treatment

Diagnosis Path: Healthcare providers diagnose diphtheritic conjunctivitis primarily through a clinical examination, noting characteristic signs such as pseudomembrane formation. Laboratory tests, including conjunctival swabs, can identify *Corynebacterium diphtheriae* bacteria, confirming the diagnosis. Additional blood tests may be performed to assess for systemic involvement or diphtheria toxin absorption. A thorough patient history, including vaccination status and potential exposure, helps in assessing risk factors.

Treatment Protocols: Treatment of diphtheritic conjunctivitis involves prompt administration of antibiotics to eliminate bacterial infection and prevent its spread. Antitoxin therapy may be considered in cases associated with systemic diphtheria to neutralize toxin effects. Supportive care includes managing symptoms with lubricating eye drops and maintaining good hygiene to prevent secondary infections. Hospitalization might be necessary for severe cases or those with systemic involvement, and patients should be isolated to reduce transmission. Vaccination against diphtheria is crucial for prevention and is part of routine immunization schedules.

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

Clinical Advice & FAQs

Billing Guidance

Is A36.86 a billable ICD-10 code?
Yes, A36.86 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.

Documentation

How do I report A36.86?
Clinical documentation must specify the nature of Diphtheritic conjunctivitis and any associated comorbidities for accurate reporting.

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