O91.11

Abscess of breast associated with pregnancy

Non-billable header

O91.11 is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

Applicable to

  • Gestational mammary abscess
  • Gestational purulent mastitis
  • Gestational subareolar abscess

Includes (from O91)

  • Note: CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
  • Note: 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)
  • Note: Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
  • Note: 1st trimester- less than 14 weeks 0 days
  • Note: 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
  • Note: 3rd trimester- 28 weeks 0 days until delivery

Excludes1

Not coded here — never report together with this code.

  • supervision of normal pregnancy (Z34.-) (from O91)

Excludes2

Not included here — may be reported together when both conditions exist.

  • mental and behavioral disorders associated with the puerperium (F53.-) (from O91)
  • obstetrical tetanus (A34) (from O91)
  • postpartum necrosis of pituitary gland (E23.0) (from O91)
  • puerperal osteomalacia (M83.0) (from O91)
  • mental and behavioral disorders associated with the puerperium (F53.-) (from O91)
  • obstetrical tetanus (A34) (from O91)
  • puerperal osteomalacia (M83.0) (from O91)

Use additional code

Add a code to identify the following, if applicable.

  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known. (from O91)
  • code to identify infection (from O91)

Also known as

  • Gestational mammary abscess
  • Gestational purulent mastitis
  • Gestational subareolar abscess
  • Abscess, gestational mammary
  • Abscess, gestational subareolar
  • Gestational, mammary abscess
  • Gestational, purulent mastitis
  • Gestational, subareolar abscess
  • Pregnancy, complicated by, abscess or cellulitis, breast

Parent code

  • O91.1Abscess of breast associated with pregnancy, the puerperium and lactationHeader

More specific codes O91.11

  • O91.111Abscess of breast associated with pregnancy, first trimesterBillable
  • O91.112Abscess of breast associated with pregnancy, second trimesterBillable
  • O91.113Abscess of breast associated with pregnancy, third trimesterBillable
  • O91.119Abscess of breast associated with pregnancy, unspecified trimesterBillable

Related codes

  • O91.12Abscess of breast associated with the puerperiumBillable
  • O91.13Abscess of breast associated with lactationBillable

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