Billable / Specific Code
ICD-10-CM O86.4 is the diagnosis code for Pyrexia of unknown origin following delivery. This code falls under the section "Complications predominantly related to the puerperium" within Chapter 15 â Pregnancy, childbirth and the puerperium (O00-O9A). 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.
The following conditions are not included in O86.4. If the patient has both, code each condition separately:
Understanding where O86.4 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, O86.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
O86.4 is the ICD-10-CM diagnosis code for "Pyrexia of unknown origin following delivery". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of O86.4 is O86 ("Other puerperal infections"). O86.4 provides a more specific classification within this category.
O86.4 is located in Section O85-O92 â "Complications predominantly related to the puerperium" within Chapter 15 of the ICD-10-CM Tabular List.
O86.4 has 1918 sub-code(s) that provide more specific detail: A00, A01, A02, A03, A04 and more.
Use O86.4 when the patients documented diagnosis matches "Pyrexia of unknown origin following delivery" 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 Pyrexia of unknown origin following delivery is O86.4.
Yes, O86.4 can be used as a primary diagnosis code since it is billable and specific.
O86.4 is in Chapter 15 of the ICD-10-CM Tabular List.
Yes, O86.4 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.