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Home/Diagnosis/ICD-10 Coding for Corneal Edema

ICD-10 Coding for Corneal Edema

H18.20
H18.21
H18.22

Complete ICD-10-CM coding and documentation guide for icd-10 coding for corneal edema includes clinical validation requirements, medical necessity guidelines, and coding policies.

Also Known as:
Swelling of the Cornea
Corneal Swelling
keratitis bullosa
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Key Information: ICD-10 Coding for Corneal Edema

Essential facts and insights about ICD-10 Coding for Corneal Edema

Use ICD-10 code H18.20 for unspecified corneal edema, ensuring proper documentation in clinical notes.

Primary ICD-10-CM Codes

Unspecified corneal edema

Billable Code
H18.20
Billable

Diagnostic Criteria

documentation_criteria:
  • • Absence of specific cause in medical records
applicable_to:
  • • General corneal edema without specified cause
excludes:
  • • Corneal edema due to specific causes like contact lens wear or surgery
validation:
  • • Documented corneal swelling without identifiable cause
notes:
  • • Ensure documentation specifies the absence of a known cause.
risks:
  • • Risk of under-coding if a specific cause is known but not documented.

Contact lens-induced corneal edema

Non-Billable
H18.21
Non-Billable

Diagnostic Criteria

applicable_to:
  • • Corneal edema due to contact lens wear
excludes:
  • • Corneal edema due to other causes
validation:
  • • History of contact lens use with symptoms worsening during wear
notes:
  • • Document specific details about contact lens use.

Idiopathic corneal edema

Non-Billable
H18.22
Non-Billable

Diagnostic Criteria

applicable_to:
  • • Corneal edema of unknown cause
excludes:
  • • Corneal edema with known causes
validation:
  • • Negative workup for secondary causes
notes:
  • • Ensure thorough documentation of negative findings for other causes.

Secondary corneal edema

Non-Billable
H18.23
Non-Billable

Diagnostic Criteria

applicable_to:
  • • Corneal edema due to specific secondary causes
excludes:
  • • Corneal edema without a known secondary cause
validation:
  • • Link to specific cause such as surgery or disease
notes:
  • • Document the specific secondary cause and ensure proper sequencing.
Ancillary Codes

Additional codes that may be used with this diagnosis

H18.51

Fuchs' dystrophy

Use when Fuchs' dystrophy is the underlying cause.

Frequently Asked Questions

What is the ICD-10 code for corneal edema?

The ICD-10 code for corneal edema is H18.2, with specific subcodes for different causes such as contact lens use (H18.21) and secondary causes (H18.23).

How do you code corneal edema due to contact lens use?

For corneal edema due to contact lens use, use ICD-10 code H18.21. Ensure documentation includes history of contact lens wear.

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