Non-Billable / Non-Specific Code
ICD-10-CM Q86 is the diagnosis code for Congenital malformation syndromes due to known exogenous causes, not elsewhere classified. This code falls under the section "Other congenital malformations" within Chapter 17 â Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. 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 are not included in Q86. If the patient has both, code each condition separately:
Understanding where Q86 sits in the ICD-10-CM classification helps ensure proper coding:
No, Q86 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
Q86 is the ICD-10-CM diagnosis code for "Congenital malformation syndromes due to known exogenous causes, not elsewhere classified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
Q86 is located in Section Q80-Q89 â "Other congenital malformations" within Chapter 17 of the ICD-10-CM Tabular List.
Q86 has 4 sub-code(s) that provide more specific detail: Q86.0, Q86.1, Q86.2, Q86.8.
Use Q86 when the patients documented diagnosis matches "Congenital malformation syndromes due to known exogenous causes, not elsewhere classified" 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 Congenital malformation syndromes due to known exogenous causes, not elsewhere classified is Q86.
No, Q86 is non-billable. Use a more specific sub-code for primary diagnosis billing.
Q86 is in Chapter 17 of the ICD-10-CM Tabular List.
Yes, Q86 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.