Non-Billable / Non-Specific Code
ICD-10-CM Z17.3 is the diagnosis code for Human epidermal growth factor 2 receptor. This code falls under the section "Estrogen, and other hormones and factors receptor status" within Chapter 21 — Factors influencing health status and contact with health services (Z00-Z99). 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 Z17.3 sits in the ICD-10-CM classification helps ensure proper coding:
No, Z17.3 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
Z17.3 is the ICD-10-CM diagnosis code for "Human epidermal growth factor 2 receptor". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of Z17.3 is Z17 ("Estrogen, and other hormones and factors receptor status"). Z17.3 provides a more specific classification within this category.
Z17.3 is located in Section Z17 — "Estrogen, and other hormones and factors receptor status" within Chapter 21 of the ICD-10-CM Tabular List.
Z17.3 has 1918 sub-code(s) that provide more specific detail: A00, A01, A02, A03, A04 and more.
Use Z17.3 when the patients documented diagnosis matches "Human epidermal growth factor 2 receptor" 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 Human epidermal growth factor 2 receptor is Z17.3.
No, Z17.3 is non-billable. Use a more specific sub-code for primary diagnosis billing.
Z17.3 is in Chapter 21 of the ICD-10-CM Tabular List.
Yes, Z17.3 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.