ICD10 code of Retinitis pigmentosa and ICD9 code

Retinitis pigmentosa is classified under the ICD-10-CM code H35.52 (Pigmentary retinal dystrophy) and the legacy ICD-9-CM code 362.74 (Retinitis pigmentosa). These diagnostic codes are used by medical providers and insurance companies to identify this group of rare, inherited disorders characterized by progressive retinal degeneration and vision loss.

What is the clinical significance of Retinitis pigmentosa?

Retinitis pigmentosa is a heterogeneous group of genetic disorders that cause the breakdown and loss of cells in the retina, the light-sensitive tissue that lines the back of the eye. As the condition progresses, patients typically experience a gradual decline in their vision, starting with night blindness (nyctalopia) and a narrowing of the visual field, often referred to as "tunnel vision." Because Retinitis pigmentosa is a progressive condition, it requires ongoing monitoring by an ophthalmologist or a retinal specialist to manage symptoms and plan for long-term vision changes.

How are the diagnostic codes for Retinitis pigmentosa applied?

Medical coding is essential for tracking the prevalence of Retinitis pigmentosa within health systems. While the primary ICD-10 code is H35.52, clinicians may also use supplemental codes to describe associated manifestations. Because Retinitis pigmentosa can sometimes be part of a syndrome—such as Usher syndrome or Bardet-Biedl syndrome—a physician may also code for these underlying systemic conditions to ensure comprehensive care. Currently, 707 people with Retinitis pigmentosa have joined the DiseaseMaps community, sharing their experiences with diagnosis and symptom management.

What factors contribute to the progression of Retinitis pigmentosa?

The progression of Retinitis pigmentosa varies significantly between individuals due to the vast number of genetic mutations associated with the disease. More than 100 different genes have been identified as potential causes. The inheritance patterns also play a critical role in how the disease manifests within families:

• Autosomal Recessive: The most common form, where both parents carry the gene mutation but do not necessarily show symptoms.


• Autosomal Dominant: A single copy of the mutated gene from one parent is sufficient to cause the condition.


• X-Linked: The mutation is located on the X chromosome, typically affecting males more severely than females.


• Simplex/Sporadic: Cases where there is no known family history, often representing a new mutation.

How is a diagnosis of Retinitis pigmentosa confirmed?

Beyond the use of ICD-10 codes, a diagnosis is confirmed through a series of specialized clinical tests. Ophthalmologists typically perform an electroretinogram (ERG) to measure the electrical response of the retina's light-sensitive cells. Additionally, visual field testing (perimetry) and optical coherence tomography (OCT) are standard tools used to document the structural and functional status of the retina over time. Genetic testing is increasingly recommended to identify the specific mutation, which can provide information regarding the expected rate of progression and eligibility for emerging gene therapies.

Next steps

• Consult a board-certified retinal specialist to confirm your diagnosis and establish a baseline for your visual function.


• Request a referral to a genetic counselor to discuss the inheritance pattern of your specific Retinitis pigmentosa diagnosis.


• Connect with the 707 members on DiseaseMaps.org to share experiences, coping strategies, and information about local support resources.


• Stay informed about clinical trials and gene therapy research through the Foundation Fighting Blindness or NIH ClinicalTrials.gov.

Medical disclaimer: This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment; always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition.

References

• National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD): Retinitis Pigmentosa.


• Orphanet: Retinitis pigmentosa (ORPHA:791).


• Online Mendelian Inheritance in Man (OMIM): Entry #268000 (Retinitis Pigmentosa).


• Foundation Fighting Blindness: Understanding Retinitis Pigmentosa.