H53.55
Tritanomaly
Clinical Classification Guidelines
Inclusion Terms
- Tritanopia
Medical Intelligence & Overview
Tritanomaly, classified under ICD-10 code H53.55, is a hereditary visual condition characterized by a difficulty in distinguishing blue and yellow hues. It is a type of blue-yellow color vision deficiency, where the ability to perceive these colors accurately is impaired. Unlike complete color blindness, individuals with tritanomaly still perceive colors, but their perception of the blue-yellow spectrum is diminished. This condition can impact daily activities that require color discrimination, such as choosing clothing, interpreting color-coded information, or navigating environments with color signals.
Causes & Symptoms
Clinical Causes: Genetic mutations affecting the S-cones (short wavelength cone cells responsible for blue light detection) Inheritance pattern: Tritanomaly is typically inherited in an autosomal dominant manner, although rare cases may involve other genetic factors. Potential association with other hereditary ocular conditions Environmental factors do not play a significant role in the development of tritanomaly
Key Symptoms: Difficulty distinguishing between blue and yellow shades Colors may appear faded or less vibrant in the blue-yellow spectrum Challenges in differentiating certain color-coded signs or signals, especially those utilizing blue or yellow No complete loss of color vision; other colors are perceived normally Some affected individuals may experience mild visual discomfort or confusion in complex visual environments
Diagnostic & Treatment
Diagnosis Path: Ishihara color test variants specifically designed to detect blue-yellow deficiencies 2-color and 3-color Farnsworth-Munsell hue tests to evaluate color discrimination capabilities Electroretinography (ERG) may be used in some cases to assess cone cell function Genetic counseling and testing can support diagnosis, especially in individuals with a family history
Treatment Protocols: Use of color filters or glasses that enhance color perception Adapting environment lighting to improve color differentiation Educational and occupational accommodations to assist affected individuals Assistive technologies, such as color-identification apps and devices, to support daily tasks Genetic counseling for affected families to understand inheritance patterns and implications
Clinical Advice & FAQs
Billing Guidance
Is H53.55 a billable ICD-10 code?
Yes, H53.55 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report H53.55?
Clinical documentation must specify the nature of Tritanomaly and any associated comorbidities for accurate reporting.
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