Edema

This code represents the accumulation of excess fluid in the interstitial spaces of tissues, leading to swelling. It is a general symptom rather than a specific disease, indicating an underlying physiological imbalance. Edema can manifest locally or systemically.

Use this code when documentation indicates generalized or unspecified edema, without further specificity regarding its cause or location. This is appropriate when the physician has diagnosed "edema" but has not yet identified the etiology (e.g., cardiac, renal, hepatic, allergic). Supporting documentation includes physician notes describing swelling, fluid retention, or puffiness.

• Always attempt to code the underlying cause of the edema first, if known and documented.
• Avoid using this code if a more specific code for the type or location of edema is available (e.g., pulmonary edema, cerebral edema, lymphedema).
• This code is often used as a secondary diagnosis when the primary diagnosis is the condition causing the fluid retention.