Z17.3
Human epidermal growth factor 2 receptor
Clinical Classification Guidelines
Medical Intelligence & Overview
The human epidermal growth factor receptor 2 (HER2) is a protein found on the surface of some cells, notably in breast and certain other cancers. It plays a crucial role in the growth, division, and repair of cells. When HER2 is overexpressed or amplified, it can lead to the development of aggressive cancers. The ICD-10 code Z17.3 is used to indicate the presence of the HER2 receptor, primarily in a diagnostic or health record context, helping healthcare providers understand and classify the molecular characteristic of a tumor. Knowledge of HER2 status influences treatment decisions and prognosis for cancer patients.
Causes & Symptoms
Clinical Causes: Genetic mutations that lead to gene amplification or overexpression of the HER2 protein Inherited genetic factors that may predispose individuals to HER2-positive cancers Environmental influences combined with genetic susceptibility, potentially contributing to abnormal HER2 expression
Key Symptoms: Rapidly growing tumors, particularly in the breast Lumps or masses that are often firm and painless Skin changes overlying the tumor such as dimpling or redness Persistent pain or discomfort in the affected area Unexplained weight loss or fatigue in advanced cases
Diagnostic & Treatment
Diagnosis Path: Determining HER2 status involves specific laboratory tests performed on tumor tissue samples, including:
Treatment Protocols: Treatment strategies for HER2-positive cancers aim to target the HER2 receptor to inhibit tumor growth. Options include:
Clinical Advice & FAQs
Billing Guidance
Is Z17.3 a billable ICD-10 code?
Yes, Z17.3 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report Z17.3?
Clinical documentation must specify the nature of Human epidermal growth factor 2 receptor and any associated comorbidities for accurate reporting.
Cite this Clinical Reference