ICD-10-CM E84 is the diagnosis code for Cystic fibrosis. This code falls under the section "Metabolic disorders" within Chapter 4 — Endocrine, nutritional and metabolic diseases (E00-E89). 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 E84 sits in the ICD-10-CM classification helps ensure proper coding:
No, E84 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
E84 is the ICD-10-CM diagnosis code for "Cystic fibrosis". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
E84 is located in Section E70-E88 — "Metabolic disorders" within Chapter 4 of the ICD-10-CM Tabular List.
E84 has 4 sub-code(s) that provide more specific detail: E84.0, E84.1, E84.8, E84.9.
Use E84 when the patients documented diagnosis matches "Cystic fibrosis" 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 Cystic fibrosis is E84.
No, E84 is non-billable. Use a more specific sub-code for primary diagnosis billing.
E84 is in Chapter 4 of the ICD-10-CM Tabular List.
Yes, E84 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.