InnovaRx Innova Health Strategies
Pricing Sign in

O86.4

Pyrexia of unknown origin following delivery

Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 11 never code together
O86code
Excludes2
  • infection during labor (O75.3)O75.3
  • obstetrical tetanus (A34)A34
O86.4code
Excludes2
O85-O92block
Excludes2
  • mental and behavioral disorders associated with the puerperium (F53.-)F53.-
  • obstetrical tetanus (A34)A34
  • puerperal osteomalacia (M83.0)M83.0
O00-O9Achapter
Excludes1
  • supervision of normal pregnancy (Z34.-)Z34.-
Excludes2
  • mental and behavioral disorders associated with the puerperium (F53.-)F53.-
  • obstetrical tetanus (A34)A34
  • postpartum necrosis of pituitary gland (E23.0)E23.0
  • puerperal osteomalacia (M83.0)M83.0

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 10
O86code
Use additional code
  • code (B95-B97), to identify infectious agentB95-B97
O86.4code
Inclusion terms
  • Puerperal infection NOS following delivery
  • Puerperal pyrexia NOS following delivery
O00-O9Achapter
Notes
  • CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
  • Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
  • Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
  • 1st trimester- less than 14 weeks 0 days
  • 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
  • 3rd trimester- 28 weeks 0 days until delivery
Use additional code
  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.Z3A
Index entries leading here 4
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) R50.9
  • Puerperal, puerperium (complicated by, complications)
    • fever (of unknown origin) O86.4
    • infection O86.4
    • pyrexia (of unknown origin) O86.4
  • Infection, infected, infective (opportunistic) B99.9
  • Pyrexia (of unknown origin) R50.9
Alongside this code 4 same parent — O86
O86.0 Infection of obstetric surgical wound category O86.1 Other infection of genital tract following delivery category O86.2 Urinary tract infection following delivery category O86.8 Other specified puerperal infections category
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
yes
Code set
FY2026
Parent
O86
Block
O85-O92
Siblings
4

Present FY2024–FY2027.