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N85.A

Isthmocele

Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 14 never code together
N85code
Excludes1
  • endometriosis (N80.-)N80.-
  • inflammatory diseases of uterus (N71.-)N71.-
  • noninflammatory disorders of cervix, except malposition (N86-N88)N86-N88
  • polyp of corpus uteri (N84.0)N84.0
  • uterine prolapse (N81.-)N81.-
N85.Acode
Excludes1
  • maternal care for cesarean scar defect (isthmocele) (O34.22)O34.22O34.22
N00-N99chapter
Excludes2
  • certain conditions originating in the perinatal period (P04-P96)P04-P96
  • certain infectious and parasitic diseases (A00-B99)A00-B99
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
  • endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
  • injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
  • neoplasms (C00-D49)C00-D49
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94

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 5
N85.Acode
Inclusion terms
  • Isthmocele (non-pregnant state)
Code also
  • any associated conditions such as:
  • abnormal uterine and vaginal bleeding, unspecified (N93.9)N93.9N93.9
  • female infertility of uterine origin (N97.2)N97.2N97.2
  • pelvic and perineal pain (R10.2-)R10.2-R10.2-
Index entries leading here 1
  • Cesarean delivery, previous, affecting management of pregnancy O34.219
    • isthmocele (non-pregnant state) N85.A
    • scar
      • defect (non-pregnant state) N85.A
Alongside this code 9 same parent — N85
N85.0 Endometrial hyperplasia category N85.2 Hypertrophy of uterus N85.3 Subinvolution of uterus N85.4 Malposition of uterus N85.5 Inversion of uterus N85.6 Intrauterine synechiae N85.7 Hematometra N85.8 Other specified noninflammatory disorders of uterus N85.9 Noninflammatory disorder of uterus, unspecified
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
N85
Block
N80-N98
Siblings
9

Present FY2024–FY2027.