AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2021 Issue 4; ICD-10-CM New/Revised Codes

Nocturnal Polyuria

Code R35.8, Other polyuria, was expanded to allow the addition of new code R35.81, Nocturnal polyuria. Code R35.89, Other polyuria, was also added under this new subcategory to allow the continued reporting of other and unspecified polyuria. Nocturnal polyuria is a condition in which polyuria occurs only at night and in the absence of conditions such as neurogenic bladder, small bladder, overactive bladder or benign prostatic hyperplasia. Nocturnal polyuria is typically caused by the production of too much urine at night. With this condition, the usual day to night ratio of urine production is altered...

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