O26.12
✓ BillableLow weight gain in pregnancy, second trimester
Pregnancy, childbirth and the puerperium (O00-O9A)
Clinical Description
ICD-10-CM code O26.12 represents low weight gain in pregnancy, second trimester. This code falls under the Pregnancy, childbirth and the puerperium (O00-O9A) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 6-character code at the 5th level of specificity. This is the most specific code available in this subcategory.
Frequently Asked Questions
What is ICD-10 code O26.12?
ICD-10-CM code O26.12 is "Low weight gain in pregnancy, second trimester". It belongs to the category: Pregnancy, childbirth and the puerperium (O00-O9A).
Is O26.12 a billable ICD-10 code?
Yes, O26.12 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Related Codes in O26.1
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)