ICD-10-CM Q70.4 is the diagnosis code for Polysyndactyly, unspecified. This code falls under the section "Congenital malformations and deformations of the musculoskeletal system" within Chapter 17 — Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as Q70.4. They are mutually exclusive:
Understanding where Q70.4 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, Q70.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Q70.4 is the ICD-10-CM diagnosis code for "Polysyndactyly, unspecified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of Q70.4 is Q70 ("Syndactyly"). Q70.4 provides a more specific classification within this category.
Q70.4 is located in Section Q65-Q79 — "Congenital malformations and deformations of the musculoskeletal system" within Chapter 17 of the ICD-10-CM Tabular List.
Use Q70.4 when the patients documented diagnosis matches "Polysyndactyly, unspecified" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Polysyndactyly, unspecified is Q70.4.
Yes, Q70.4 can be used as a primary diagnosis code since it is billable and specific.
Q70.4 is in Chapter 17 of the ICD-10-CM Tabular List.
Type 1 Excludes for Q70.4 include: specified syndactyly of hand and feet - code to specified conditions (Q70.0- -Q70.3-).
Yes, Q70.4 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.