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Q89.3

✓ Billable

Situs inversus

Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

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Also Known As

Dextrocardia with situs inversusMirror-image atrial arrangement with situs inversusSitus inversus or transversus abdominalisSitus inversus or transversus thoracisTransposition of abdominal visceraTransposition of thoracic viscera

❌ Excludes1

direct

These codes are mutually exclusive. Never code them together.

  • • dextrocardia NOS (Q24.0)

Clinical Description

ICD-10-CM code Q89.3 represents situs inversus. This code falls under the Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0) 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 5-character code at the 4th level of specificity. This is the most specific code available in this subcategory. Coders should note that Q89.3 has 1 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code Q89.3?

ICD-10-CM code Q89.3 is "Situs inversus". It belongs to the category: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0).

Is Q89.3 a billable ICD-10 code?

Yes, Q89.3 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

What codes are excluded with Q89.3?

Q89.3 has 1 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Related Codes in Q89

Other codes in the same category that may be relevant for differential coding:

Q89.0Congenital absence and malformations of spleenQ89.1Congenital malformations of adrenal glandQ89.2Congenital malformations of other endocrine glandsQ89.4Conjoined twinsQ89.7Multiple congenital malformations, not elsewhere classifiedQ89.8Other specified congenital malformationsQ89.9Congenital malformation, unspecified

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Code Information

CodeQ89.3
BillableYes
ParentQ89
CategoryCongenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Excludes11 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)