ICD10 code of Klippel-Trénaunay-Weber Syndrome and ICD9 code

Klippel-Trénaunay-Weber syndrome (often referred to as Klippel-Trénaunay syndrome) is classified under the ICD-10 code Q87.2, which covers congenital malformation syndromes predominantly involving limbs. In the older ICD-9-CM classification system, the condition was identified by the code 759.89, representing other specified congenital anomaly syndromes.

What exactly is Klippel-Trénaunay-Weber syndrome?

Klippel-Trénaunay-Weber syndrome is a rare congenital disorder characterized by a triad of symptoms: a port-wine stain (capillary malformation), abnormal overgrowth of soft tissues and bones (hypertrophy), and venous malformations. While the term "Klippel-Trénaunay-Weber syndrome" has historically been used to describe cases involving an arteriovenous fistula, modern clinical consensus often distinguishes Klippel-Trénaunay syndrome (KTS) from Parkes Weber syndrome, which explicitly involves high-flow arteriovenous shunts. Understanding the specific classification of your diagnosis is vital for coordinating care with specialists, as the management of Klippel-Trénaunay-Weber syndrome requires a multidisciplinary approach.

How are the ICD-10 and ICD-9 codes used in clinical practice?

Medical billing and diagnostic coding for Klippel-Trénaunay-Weber syndrome are essential for insurance coverage and clinical documentation. Because Klippel-Trénaunay-Weber syndrome is a complex, multisystem condition, physicians may also use secondary codes to describe specific complications, such as chronic venous insufficiency or lymphatic abnormalities. Using the correct ICD-10 code, Q87.2, ensures that your electronic health record accurately reflects the systemic nature of Klippel-Trénaunay-Weber syndrome, facilitating better communication between vascular surgeons, dermatologists, and radiologists.

What are the primary clinical features of Klippel-Trénaunay-Weber syndrome?

The clinical presentation of Klippel-Trénaunay-Weber syndrome varies significantly between individuals. Within the DiseaseMaps.org community, 309 people with Klippel-Trénaunay-Weber syndrome have joined to share their lived experiences, reflecting the diverse ways this condition manifests. Common clinical findings include:

• Capillary malformations: Usually presenting as flat, pink or reddish port-wine stains on the skin.


• Venous malformations: Abnormal, dilated veins that may lead to pain, swelling, or clotting risks.


• Hypertrophy: Excessive growth of bones and soft tissues, most commonly affecting one or more limbs, leading to limb-length discrepancy.


• Lymphatic abnormalities: Potential for lymphedema or lymphangiomas in affected areas.

Is Klippel-Trénaunay-Weber syndrome hereditary?

Current research suggests that Klippel-Trénaunay-Weber syndrome is typically a sporadic condition, meaning it is not usually inherited from parents. It is widely believed to be caused by post-zygotic somatic mutations—specifically in the PIK3CA gene—that occur after conception. Because these mutations are not present in the germline (egg or sperm), the likelihood of passing Klippel-Trénaunay-Weber syndrome to offspring is considered extremely low. Genetic counseling is highly recommended for families to discuss the specific nature of these somatic mutations and to provide clarity on the non-hereditary nature of the syndrome.

Next steps

• Consult with a vascular specialist or an interventional radiologist experienced in managing vascular anomalies.


• Request a referral to a geneticist to discuss the role of PIK3CA testing in confirming your diagnosis.


• Join the 309 members of the Klippel-Trénaunay-Weber syndrome community on DiseaseMaps.org to share resources and coping strategies.


• Maintain a comprehensive record of your symptoms and treatments to assist your medical team in long-term care planning.

Medical disclaimer: This information is for educational purposes only and does not constitute professional medical advice, diagnosis, or treatment; always seek the advice of your physician or other qualified health provider with any questions regarding a medical condition.

References

• NIH Genetic and Rare Diseases (GARD) Information Center: Klippel-Trénaunay syndrome.


• Orphanet: Klippel-Trénaunay-Weber syndrome (ORPHA:495).


• OMIM (Online Mendelian Inheritance in Man): Klippel-Trénaunay-Weber syndrome (Entry #149000).


• The Klippel-Trénaunay Support Group (Patient advocacy resources).