O62.4 vs O66.9
O62.4 (Hypertonic, incoordinate, and prolonged uterine contractions) compared with O66.9 (Obstructed labor, unspecified), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. O62.4 carries an Excludes1 note covering O66.9: “dystocia (fetal) (maternal) NOS (O66.9)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| O62.4Hypertonic, incoordinate, and prolonged uterine contractions | O66.9Obstructed labor, unspecified | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) |
| Definition | Hypertonic, incoordinate, and prolonged uterine contractions is a billable ICD-10-CM diagnosis code (O62.4). | Obstructed labor, unspecified is a billable ICD-10-CM diagnosis code (O66.9). |
| Includes | Cervical spasm Contraction ring dystocia Dyscoordinate labor Hour-glass contraction of uterus | Dystocia NOS Fetal dystocia NOS Maternal dystocia NOS |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources