M12.46
Header — not billableIntermittent hydrarthrosis, knee
The ICD-10 code for intermittent hydrarthrosis, knee is M12.46.
M12.46 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 3 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- M12.40Intermittent hydrarthrosis, unspecified site
- M12.41Intermittent hydrarthrosis, shouldernon-billable header
- M12.42Intermittent hydrarthrosis, elbownon-billable header
- M12.43Intermittent hydrarthrosis, wristnon-billable header
- M12.44Intermittent hydrarthrosis, handnon-billable header
- M12.45Intermittent hydrarthrosis, hipnon-billable header
- M12.47Intermittent hydrarthrosis, ankle and footnon-billable header
- M12.48Intermittent hydrarthrosis, other site
- M12.49Intermittent hydrarthrosis, multiple sites
- M12.46Intermittent hydrarthrosis, kneenon-billable header