Short answer · Medically reviewed summary · Last updated: 2026-04-07
TL;DR: The ICD-10 code for Idiopathic Thrombocytopenic Purpura, now more commonly referred to as Immune Thrombocytopenia (ITP), is D69.3. In the older ICD-9 classification system, this condition was coded as 287.31. Why did the name change from Idiopathic Thrombocytopenic Purpura to Immune Thrombocytopenia? While the term Idiopathic Thrombocytopenic Purpura remains widely recognized, the medical community has shifted toward using the term Immune Thrombocytopenia (ITP).
3 people with Idiopathic Thrombocytopenic Purpura have shared their first-person experience on this question at DiseaseMaps.
ICD10 code of Idiopathic Thrombocytopenic Purpura and ICD9 code
ICD-10 and ICD-9 codes for Idiopathic Thrombocytopenic Purpura, with classification details for clinicians, coders and patients.
TL;DR: The ICD-10 code for Idiopathic Thrombocytopenic Purpura, now more commonly referred to as Immune Thrombocytopenia (ITP), is D69.3. In the older ICD-9 classification system, this condition was coded as 287.31.
Why did the name change from Idiopathic Thrombocytopenic Purpura to Immune Thrombocytopenia?
While the term Idiopathic Thrombocytopenic Purpura remains widely recognized, the medical community has shifted toward using the term Immune Thrombocytopenia (ITP). The word "idiopathic" means of unknown cause, yet we now understand that ITP is an autoimmune process where the immune system mistakenly targets and destroys platelets. The term "purpura" refers to the purple-colored bruising that often occurs when platelet counts drop. Understanding that Idiopathic Thrombocytopenic Purpura is an immune-mediated condition rather than a mystery illness helps patients and clinicians focus on therapies that modulate the immune response, such as corticosteroids, IVIG, or thrombopoietin receptor agonists.
How are medical billing codes used for Idiopathic Thrombocytopenic Purpura?
Accurate coding is essential for navigating insurance coverage, accessing specialized treatments, and participating in clinical registries. When your physician documents your diagnosis, they use the ICD-10 code D69.3 to ensure that your medical records reflect the specific nature of Idiopathic Thrombocytopenic Purpura. Because 374 people with Idiopathic Thrombocytopenic Purpura have already shared their experiences on DiseaseMaps.org, we know that administrative hurdles regarding insurance and diagnosis codes can be a significant source of stress. Having the correct code (D69.3) ready when communicating with billing departments or specialty pharmacies can often expedite the approval process for necessary medications.
What diagnostic criteria define Idiopathic Thrombocytopenic Purpura?
The diagnosis of Idiopathic Thrombocytopenic Purpura is essentially a diagnosis of exclusion. Clinicians look for a low platelet count (thrombocytopenia) while ensuring that other potential causes—such as leukemia, drug-induced thrombocytopenia, or viral infections—are ruled out. The following factors are typically evaluated during the diagnostic process:
- Complete Blood Count (CBC): Identifying an isolated low platelet count, typically below 100 x 10⁹/L.
- Peripheral Blood Smear: To confirm that other cell lines (red and white blood cells) are normal and to visually inspect platelet morphology.
- Clinical History: Assessing for recent viral illnesses, medication use, or signs of bleeding such as petechiae or ecchymosis.
- Exclusion of secondary causes: Ensuring the patient does not have underlying conditions like HIV, Hepatitis C, or systemic lupus erythematosus.
How does the community support those living with Idiopathic Thrombocytopenic Purpura?
Living with Idiopathic Thrombocytopenic Purpura can be isolating, especially when platelet counts fluctuate unpredictably. Our community at DiseaseMaps.org serves as a vital resource for those navigating the emotional and physical complexities of the condition. By connecting with others, patients often find practical advice on managing the side effects of treatments or dealing with the "watch and wait" approach often recommended for mild cases. Sharing experiences helps normalize the daily challenges of Idiopathic Thrombocytopenic Purpura and provides a platform for peer-to-peer emotional support.
Next steps
- Consult with a board-certified hematologist who specializes in platelet disorders to discuss your specific ICD-10 documentation.
- Maintain a personal health binder containing your laboratory reports and a list of your current medications and their associated ICD-10 codes.
- Join the Idiopathic Thrombocytopenic Purpura community on DiseaseMaps.org to connect with others who have navigated the same insurance and diagnostic challenges.
- Ask your care team about current clinical trials if standard first-line therapies have not achieved the desired platelet response.
Medical disclaimer: This information is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment; always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
References
- NIH Genetic and Rare Diseases Information Center (GARD): Immune Thrombocytopenia (ITP) Overview.
- Orphanet: Immune thrombocytopenic purpura (ORPHA:885).
- OMIM (Online Mendelian Inheritance in Man): Thrombocytopenic purpura, autoimmune (Entry #188000).
- Platelet Disorder Support Association (PDSA): Patient resources and clinical definitions for ITP.
Posted Jul 7, 2017 by Theresa 4010
D69.3
Posted Sep 27, 2017 by jillenid 2570
ICD-9-CM 287.31 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 287.31 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Posted Sep 29, 2017 by Marília 3570
