Nonspecific elevation of levels of transaminase or lactic acid dehydrogenase [LDH]

This code signifies an abnormal laboratory finding indicating elevated levels of liver enzymes (transaminases like ALT/AST) or lactic acid dehydrogenase (LDH) without a definitive diagnosis. It points to potential cellular damage, often in the liver, heart, or muscles, but the specific cause is yet to be determined.

Use this code when laboratory results show elevated transaminase or LDH levels, and the physician has not yet identified the underlying condition responsible for these elevations. Documentation should clearly state the abnormal lab findings and the absence of a more specific diagnosis at the time of coding.

• Do not use this code if a definitive diagnosis explaining the elevated enzymes (e.g., acute hepatitis, myocardial infarction) has been established.
• This code is typically a "sign or symptom" code and should be sequenced as a secondary diagnosis when a more specific underlying condition is being investigated or treated.
• Avoid using this code if the elevation is transient, clinically insignificant, or due to a known, non-pathological cause (e.g., strenuous exercise).