O34.22 Maternal care for cesarean scar defect (isthmocele)

Billable ICD-10-CM code, FY2026.

Applies from O34 Maternal care for abnormality of pelvic organs

Includes

• the listed conditions as a reason for hospitalization or other obstetric care of the mother, or for cesarean delivery before onset of labor

Code first

• any associated obstructed labor (O65.5)

Use additional code

• code for specific condition

MS-DRG index

Defines the logic of DRG(s) 817-819 in MDC 14.

Medicare Code Edits (MCE v43.1 (April 2026))

• Maternity diagnoses (age 9 through 64): Age conflict edit. These diagnoses are clinically expected only in patients age 9 through 64.

Code annotations containing back-references to O34.22

Back-references to O34.22

• Type 1 Excludes: N85.A Isthmocele ("maternal care for cesarean scar defect (isthmocele) (O34.22)")

Back-references to O34.2

• Type 1 Excludes: Z98.891 History of uterine scar from previous surgery ("Maternal care due to uterine scar from previous surgery (O34.2-)")

Back-references to O34

• Use Additional: O65.5 Obstructed labor due to abnormality of maternal pelvic organs ("code to identify abnormality of pelvic organs O34.-")
• Type 2 Excludes: O99.8 Other specified diseases and conditions complicating pregnancy, childbirth and the puerperium ("maternal care for known or suspected abnormality of maternal pelvic organs (O34.-)")

Diagnosis Index entries for O34.22

• Cesarean delivery, previous, affecting management of pregnancy › isthmocele (non-pregnant state) › maternal care for
• Cesarean delivery, previous, affecting management of pregnancy › scar › defect (non-pregnant state) › maternal care for
• Delivery (childbirth) (labor) › cesarean (for) › isthmocele
• Delivery (childbirth) (labor) › cesarean (for) › previous › cesarean delivery › isthmocele
• Delivery (childbirth) (labor) › cesarean (for) › previous › cesarean delivery › scar › defect (isthmocele)
• Delivery (childbirth) (labor) › cesarean (for) › scar (s) › cesarean delivery › isthmocele
• Delivery (childbirth) (labor) › cesarean (for) › scar (s) › cesarean delivery › scar › defect (isthmocele)
• Delivery (childbirth) (labor) › cesarean (for) › scar (s) › defect (isthmocele)
• Delivery (childbirth) (labor) › vaginal, following previous cesarean delivery › scar › defect (isthmocele)
• Pregnancy (single) (uterine) › complicated by (care of) (management affected by) › cesarean scar defect (isthmocele)
• Scar, scarring › defect (isthmocele)

Nearby codes

• O34.21 Maternal care for scar from previous cesarean delivery
• O34.211 Maternal care for low transverse scar from previous cesarean delivery
• O34.212 Maternal care for vertical scar from previous cesarean delivery
• O34.218 Maternal care for other type scar from previous cesarean delivery
• O34.219 Maternal care for unspecified type scar from previous cesarean delivery
• O34.22 Maternal care for cesarean scar defect (isthmocele) (this code)
• O34.29 Maternal care due to uterine scar from other previous surgery
• O34.3 Maternal care for cervical incompetence
• O34.30 Maternal care for cervical incompetence, unspecified trimester
• O34.31 Maternal care for cervical incompetence, first trimester
• O34.32 Maternal care for cervical incompetence, second trimester