Non-Billable / Non-Specific Code
ICD-10-CM H55 is the diagnosis code for Nystagmus and other irregular eye movements. This code falls under the section "Other disorders of eye and adnexa" within Chapter 7 — Diseases of the eye and adnexa (H00-H59). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where H55 sits in the ICD-10-CM classification helps ensure proper coding:
No, H55 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
H55 is the ICD-10-CM diagnosis code for "Nystagmus and other irregular eye movements". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
H55 is located in Section H55-H57 — "Other disorders of eye and adnexa" within Chapter 7 of the ICD-10-CM Tabular List.
H55 has 2 sub-code(s) that provide more specific detail: H55.0, H55.8.
Use H55 when the patients documented diagnosis matches "Nystagmus and other irregular eye movements" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Nystagmus and other irregular eye movements is H55.
No, H55 is non-billable. Use a more specific sub-code for primary diagnosis billing.
H55 is in Chapter 7 of the ICD-10-CM Tabular List.
Yes, H55 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.