Alphabetic Index FY2027

O62.4

Hypertonic, incoordinate, and prolonged uterine contractions

FY2027Chapter 15: Pregnancy, childbirth and the puerperium/O60–O77 Complications of labor and delivery

BillableComplete code, valid to report

O62.4 (also written O624) is a billable ICD-10-CM diagnosis code for hypertonic, incoordinate, and prolonged uterine contractions. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 7 codes in category O62 (Abnormalities of forces of labor). The Alphabetic Index lists it under 32 entries. Its coding notes include a Use additional code instruction, 2 Excludes1 entries and 4 Excludes2 entries.

Guidelines tip

From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

The trimester character comes from the provider's documentation for the current encounter. The unspecified trimester code should rarely be used.

Guidelines I.C.15.a.3; I.C.15.a.5Pregnancy: the trimester characterRead the official text

Use additional code

Add the listed code as a secondary code, if known.

Also from chapter/block level (1 note)
Inherited from Chapter 15 Pregnancy, childbirth and the puerperium
  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

This code
  • dystocia (fetal) (maternal) NOS (O66.9)
Also from chapter/block level (1 note)
Inherited from Chapter 15 Pregnancy, childbirth and the puerperium
  • supervision of normal pregnancy (Z34.-)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (4 notes)
Inherited from Chapter 15 Pregnancy, childbirth and the puerperium
  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)

Inclusion terms

Conditions classified to this code.

This code
  • Cervical spasm
  • Contraction ring dystocia
  • Dyscoordinate labor
  • Hour-glass contraction of uterus
  • Hypertonic uterine dysfunction
  • Incoordinate uterine action
  • Tetanic contractions
  • Uterine dystocia NOS
  • Uterine spasm

Notes

Also from chapter/block level (6 notes)
Inherited from Chapter 15 Pregnancy, childbirth and the puerperium
  • 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

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 32 entries

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