O33.6 — Maternal care for disproportion due to hydrocephalic fetus

Not billable

Is O33.6 billable?

No — O33.6 is a non-billable header code. O33.6 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 7 billable codes beneath O33.6.

Billable codes under this header

O33.6 at a glance

Code	O33.6
Description	Maternal care for disproportion due to hydrocephalic fetus
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

How is O33.6 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to O33.6. They show the wording a clinician may have documented, which often differs from the Tabular description.

Hydrocephalus › causing disproportion (acquired) (external) (internal) (malignant) (recurrent)
Delivery › cesarean › hydrocephalic fetus (childbirth) (labor)
Pregnancy › complicated by › hydrocephalic fetus (single) (uterine)
Pregnancy › complicated by › disproportion › hydrocephalic fetus (single) (uterine)

Excludes1 — never code together — inherited from Chapter 15

The conditions below can never be reported together with O33.6 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.-)

Excludes1 — never code together — inherited from O33

The conditions below can never be reported together with O33.6 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

disproportion with obstructed labor (O65-O66)

Use additional code — inherited from Chapter 15

Report an additional code alongside O33.6 to fully describe the condition. O33.6 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 O33.6, but a patient may have both at the same time. When documentation supports it, O33.6 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)

What codes fall under O33.6? (7)

How long has O33.6 existed?

O33.6 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

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