ICD-10 Code D78.34 – Postprocedural seroma of the spleen following other procedure (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D78.34 – Postprocedural seroma of the spleen following other procedure
What it is
D78.34 identifies a seroma involving the spleen that develops after a procedure. Use it when documentation shows a postoperative fluid collection specifically linked to the spleen.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include imaging evidence of a localized postoperative fluid collection and symptoms such as left upper quadrant discomfort or abdominal fullness.
When to use this code
Use this code when the provider documents a postprocedural seroma of the spleen after a surgery or other intervention. It fits cases where the fluid collection is described as a complication of the procedure, not a routine expected finding.
If the record only mentions a splenic fluid collection without a postoperative link, check documentation before assigning D78.34. Code the condition only when the spleen and the postprocedural nature are both clear.
Do not use for
Do not use this code for splenic injury, hemorrhage, abscess, or nonprocedural cysts. If the note does not specify a seroma or does not connect it to a procedure, check documentation.
Coding tip
Confirm both the anatomic site and the postoperative complication wording in the operative or follow-up note before coding D78.34.