H49.00
✓ BillableThird [oculomotor] nerve palsy, unspecified eye
Diseases of the eye and adnexa (H00-H59)
⚠️ Excludes2
inheritedRules inherited from parent codes.
- • internal ophthalmoplegia (H52.51-)
- • internuclear ophthalmoplegia (H51.2-)
- • progressive supranuclear ophthalmoplegia (G23.1)
Clinical Description
ICD-10-CM code H49.00 represents third [oculomotor] nerve palsy, unspecified eye. This code falls under the Diseases of the eye and adnexa (H00-H59) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 6-character code at the 5th level of specificity. This is the most specific code available in this subcategory.
Frequently Asked Questions
What is ICD-10 code H49.00?
ICD-10-CM code H49.00 is "Third [oculomotor] nerve palsy, unspecified eye". It belongs to the category: Diseases of the eye and adnexa (H00-H59).
Is H49.00 a billable ICD-10 code?
Yes, H49.00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Can H49.00 be coded with other codes?
H49.00 has 3 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.
Related Codes in H49.0
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)