AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2020 Issue 4; New/Revised ICD-10-CM Codes
Hereditary Corneal Dystrophy
The codes in subcategory H18.5, Hereditary corneal dystrophies, have been expanded to identify laterality (i.e., right eye, left eye, bilateral and unspecified eye). This change results in 28 new codes. While the dystrophies are generally thought to be bilateral conditions, they may be asymmetric and may not require the same interventions. The ability to report laterality is important for tracking outcomes. Corneal dystrophy is a group of rare genetic eye conditions in which one or more parts of the cornea lose their normal clarity due to abnormal deposition of substances. ...
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Article Overview
This article explains a coding update affecting hereditary corneal dystrophies in ICD-10-CM and describes the broader clinical context of these rare genetic eye conditions. It is intended for coders, billing professionals, and clinical documentation teams who need to understand the scope of the update, the affected diagnosis category, and the reporting considerations discussed in the article.
Why This Topic Matters
The update changes how these eye conditions are represented in ICD-10-CM and supports more specific documentation and reporting. It is relevant for organizations that track ophthalmology outcomes or manage diagnosis coding for inherited corneal disorders.
What You Will Learn
- How the article frames the ICD-10-CM update for hereditary corneal dystrophies
- What broad documentation and reporting considerations are highlighted
- How the article situates the coding update within the clinical context of rare corneal disease
- Why laterality reporting is discussed as relevant to outcomes tracking
Who Should Read This
- Medical coders
- Coding auditors
- Billing and reimbursement staff
- Ophthalmology documentation teams
- Clinical informatics professionals
Codes Discussed
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