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ICD-10 O26.4 - Herpes gestationis
Chapter 15 Section O20-O29

O26.4

ICD-10 Not billable

Herpes gestationis

Use additional code: code from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known. (per Chapter 15)
From Chapter 15:
  • supervision of normal pregnancy (Z34.-)
From Section O20-O29:
  • maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
  • maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)
From Chapter 15:
  • mental and behavioral disorders associated with the puerperium (F53)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)
From Chapter 15:
  • 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
O26.4 is a "category code," which means it's non-billable. Billable codes require more specificity. Use the list below to navigate to codes that are more specific:
10
O26.40
Herpes gestationis, unspecified trimester
Billable
10
O26.41
Herpes gestationis, first trimester
Billable
10
O26.42
Herpes gestationis, second trimester
Billable
10
O26.43
Herpes gestationis, third trimester
Billable
      
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