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v1.0.0
ICD-10 Guide
DiagnosesWatery Eye

Watery Eye

ICD-10 Coding for Watery Eye(H04.21, H04.22)

PRIMARY SPECIALTYOphthalmology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Watery Eye?
Essential facts and insights about Watery Eye

Key Clinical Considerations:

  • Excessive tearing or lacrimation
  • Schirmer test results indicating reduced tear production
  • Conjunctival injection or redness during examination

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history of symptoms duration and severity
  • Details of any previous treatments or interventions
  • Specific terminology such as 'epiphora' or 'lacrimal obstruction'

Coding Guidelines

Usage Guidelines & Examples

  • Follow usage guidelines for coding based on the underlying cause of watery eye.
  • Common errors include misclassifying the type of tearing or neglecting to document associated symptoms.

Code Exclusions

Important Exclusions

  • Conditions like dry eye syndrome or conjunctivitis
  • Alternative codes for related conditions such as allergic rhinitis

Related ICD-10 Codes

Primary Codes
H04.123
Unilateral excessive tearing
H04.124
Bilateral excessive tearing
Ancillary Codes
H04.1
H10.13
Differential Codes
H04.22
H04.22
when the primary issue is drainage obstruction, confirmed by tests like dye disappearance.
H04.21
H04.21
when excessive tear production is confirmed by tests like Schirmer’s.

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Ophthalmology

Specialty Applications

  • Patients with chronic eye conditions, allergies, or infections
  • Ophthalmology clinics and emergency departments

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

What are the documentation requirements?

Document patient history, physical exam findings, and any diagnostic tests performed.

What are the billing considerations?

Ensure accurate coding based on the specific type of watery eye and associated conditions.