Non-Billable / Non-Specific Code
ICD-10-CM O11 is the diagnosis code for Pre-existing hypertension with pre-eclampsia. This code falls under the section "Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium" within Chapter 15 — Pregnancy, childbirth and the puerperium (O00-O9A). 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 O11 sits in the ICD-10-CM classification helps ensure proper coding:
No, O11 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
O11 is the ICD-10-CM diagnosis code for "Pre-existing hypertension with pre-eclampsia". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
O11 is located in Section O10-O16 — "Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium" within Chapter 15 of the ICD-10-CM Tabular List.
O11 has 6 sub-code(s) that provide more specific detail: O11.1, O11.2, O11.3, O11.4, O11.5 and more.
Use O11 when the patients documented diagnosis matches "Pre-existing hypertension with pre-eclampsia" 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 Pre-existing hypertension with pre-eclampsia is O11.
No, O11 is non-billable. Use a more specific sub-code for primary diagnosis billing.
O11 is in Chapter 15 of the ICD-10-CM Tabular List.
Yes, O11 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.