O99.843 – Bariatric surgery status complicating pregnancy, third trimester

ICD-10-CM 2027 diagnosis code · Other obstetric conditions, not elsewhere classified

Billable code

ICD-10-CM code O99.843

Code: O99.843 (claims format: O99843)
Description: Bariatric surgery status complicating pregnancy, third trimester
Short description: Bariatric surgery status comp pregnancy, third trimester
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 15. Pregnancy, childbirth and the puerperium (O00-O9A)
Block: O94-O9A Other obstetric conditions, not elsewhere classified
Parent codes: O99 › O99.8 › O99.84

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

O99 – Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

Includes:

conditions which complicate the pregnant state, are aggravated by the pregnancy or are a main reason for obstetric care

Excludes2 (not included here):

when the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36)

Use additional code:

code to identify specific condition

O99.8 – Other specified diseases and conditions complicating pregnancy, childbirth and the puerperium

Applicable to:

Conditions in D00-D48, H00-H95, M00-N99, and Q00-Q99

Excludes2 (not included here):

genitourinary infections in pregnancy (O23.-)
infection of genitourinary tract following delivery (O86.1-O86.4)
malignant neoplasm complicating pregnancy, childbirth and the puerperium (O9A.1-)
maternal care for known or suspected abnormality of maternal pelvic organs (O34.-)
postpartum acute kidney failure (O90.49)
traumatic injuries in pregnancy (O9A.2-)

Use additional code:

code to identify condition

O99.84 – Bariatric surgery status complicating pregnancy, childbirth and the puerperium

Applicable to:

Gastric banding status complicating pregnancy, childbirth and the puerperium
Gastric bypass status for obesity complicating pregnancy, childbirth and the puerperium
Obesity surgery status complicating pregnancy, childbirth and the puerperium

Related codes in O99.84

Frequently asked questions

What is ICD-10 code O99.843?

O99.843 is the ICD-10-CM code for bariatric surgery status complicating pregnancy, third trimester, in the block O94-O9A (Other obstetric conditions, not elsewhere classified).

Is O99.843 a billable code?

Yes. O99.843 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does O99.843 belong to?

It belongs to category O99 – Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.