---
urn: "urn:us-la:civcode:art:90"
article_number: "90"
status: active
heading: "Impediments of relationship"
breadcrumb: "Book I › Title IV › Chapter 1"
source_url: "https://legis.la.gov/legis/Law.aspx?d=111053"
acts_citations_raw: "Acts 1987, No. 886, §1, eff. Jan. 1, 1988; Acts 2004, No. 26, §1. NOTE: SEE ACTS 1987, NO. 886, §5."
acts_citations:
  - act_year: 1987
    act_number: 886
    section: 1
    effective_date: 1988-01-01
    role: enactment
schema_version: "1.0.0"
---

# Art. 90. Impediments of relationship

A. The following persons may not contract marriage with each other:

(1) Ascendants and descendants.

(2) Collaterals within the fourth degree, whether of the whole or of the half blood.

B. The impediment exists whether the persons are related by consanguinity or by adoption. Nevertheless, persons related by adoption, though not by blood, in the collateral line within the fourth degree may marry each other if they obtain judicial authorization in writing to do so.