ICDcodes.org
FY2027

O24.0 — Pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperium

Not billable

Is O24.0 billable?

No — O24.0 is a non-billable header code. O24.0 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 6 billable codes beneath O24.0.

O24.0 at a glance

CodeO24.0
DescriptionPre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperium
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Use additional code

Report an additional code alongside O24.0 to fully describe the condition. O24.0 is sequenced first.

  • code from category E10 to further identify any manifestations

Inclusion terms

Alternative wording in documentation that is classified to O24.0.

  • Juvenile onset diabetes mellitus, in pregnancy, childbirth and the puerperium
  • Ketosis-prone diabetes mellitus in pregnancy, childbirth and the puerperium

Excludes1 — never code together — inherited from Chapter 15

The conditions below can never be reported together with O24.0 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • supervision of normal pregnancy (Z34.-)

Use additional code — inherited from Chapter 15

Report an additional code alongside O24.0 to fully describe the condition. O24.0 is sequenced first.

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

Excludes2 — not included here — inherited from Chapter 15

The conditions below are not part of O24.0, but a patient may have both at the same time. When documentation supports it, O24.0 and the excluded code may both be reported.

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

Excludes2 — not included here — inherited from O20-O29

The conditions below are not part of O24.0, but a patient may have both at the same time. When documentation supports it, O24.0 and the excluded code may both be reported.

  • maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
  • maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)

What codes fall under O24.0? (3)

How long has O24.0 existed?

O24.0 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Description changes
  • FY2018
    Pre-existing diabetes mellitus, type 1, in pregnancy, childbirth and the puerperium
    Pre-existing type 1 diabetes mellitus, in pregnancy, childbirth and the puerperium

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

What other codes are in the O24 family? (5)