O11.3 — Pre-existing hypertension with pre-eclampsia, third trimester

BillableMCC

Is O11.3 billable?

Yes — O11.3 is billable for FY2027. O11.3 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. O11.3 may be submitted for encounters from October 1, 2026 through September 30, 2027.

O11.3 at a glance

Code	O11.3
Description	Pre-existing hypertension with pre-eclampsia, third trimester
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does O11.3 group to?

O11.3 sits in MDC 14 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

817Other Antepartum Diagnoses with O.R. Procedures with MCCsurgical
818Other Antepartum Diagnoses with O.R. Procedures with CCsurgical
819Other Antepartum Diagnoses with O.R. Procedures without CC/MCCsurgical

As a secondary diagnosis, O11.3 is a major complication or comorbidity (MCC), which can move a stay into a higher-paying DRG.

Excludes1 — never code together — inherited from Chapter 15

The conditions below can never be reported together with O11.3 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 O11.3 to fully describe the condition. O11.3 is sequenced first.

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

Use additional code — inherited from O11

Report an additional code alongside O11.3 to fully describe the condition. O11.3 is sequenced first.

code from O10 to identify the type of hypertension

Excludes2 — not included here — inherited from Chapter 15

The conditions below are not part of O11.3, but a patient may have both at the same time. When documentation supports it, O11.3 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)

How long has O11.3 existed?

O11.3 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.