ICD-10 Code D78.33 – Postprocedural seroma of the spleen following a procedure on the spleen (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D78.33 – Postprocedural seroma of the spleen following a procedure on the spleen
What it is
D78.33 identifies a seroma that develops in the spleen after a splenic procedure. It refers to a postoperative fluid collection, not an abscess or active bleeding.
Clinical signs
Clinical features vary; refer to documentation. You may see imaging or operative notes describing a localized splenic fluid collection after surgery, with postoperative pain or tenderness if recorded.
When to use this code
Use this code when the provider documents a postprocedural seroma involving the spleen after surgery or another procedure on the spleen. It fits cases where the fluid collection is specifically attributed to the procedure. Check the record for the link between the procedure and the seroma.
Do not use for
Do not use it for nonspecific abdominal fluid collections, splenic abscess, hematoma, or bleeding without documentation of seroma. If the spleen is not clearly involved, check documentation.
Coding tip
Assign D78.33 only when the postoperative seroma is clearly documented as splenic and procedure-related.