Billable / Specific Code
ICD-10-CM H00.021 is the diagnosis code for Hordeolum internum right upper eyelid. This code falls under the section "Disorders of eyelid, lacrimal system and orbit" within Chapter 7 — Diseases of the eye and adnexa (H00-H59). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. 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 H00.021 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, H00.021 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
H00.021 is the ICD-10-CM diagnosis code for "Hordeolum internum right upper eyelid". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of H00.021 is H00.02 ("Hordeolum internum"). H00.021 provides a more specific classification within this category.
H00.021 is located in Section H00-H05 — "Disorders of eyelid, lacrimal system and orbit" within Chapter 7 of the ICD-10-CM Tabular List.
Use H00.021 when the patients documented diagnosis matches "Hordeolum internum right upper eyelid" 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 Hordeolum internum right upper eyelid is H00.021.
Yes, H00.021 can be used as a primary diagnosis code since it is billable and specific.
H00.021 is in Chapter 7 of the ICD-10-CM Tabular List.
Yes, H00.021 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.