Is P74.21 a billable ICD-10-CM code?

Yes. P74.21 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does P74.21 sit in the tabular list?

Certain conditions originating in the perinatal period (P00-P96), in the block Transitory endocrine and metabolic disorders specific to newborn (P70-P74).

P74.21

P74.21 — Hypernatremia of newborn

Billable / specific codeICD-10-CM

P74.21 is a billable, specific ICD-10-CM code for hypernatremia of newborn. It is valid for submission on a claim.

Risk adjustment

P74.21 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

How P74.21 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to P74.21.

Newborn›hypernatremia
Disturbance›sodium balance, newborn›hypernatremia
Disturbance›electrolyte›newborn, transitory›sodium balance›hypernatremia
Imbalance›electrolyte›neonatal, transitory NEC›sodium›hypernatremia

Related codes at this level

Codes that share P74.2. If P74.21 is not quite right, the correct code is usually one of these.

P74.22Hyponatremia of newborn

Questions about P74.21

Is P74.21 a billable ICD-10-CM code?: Yes. P74.21 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does P74.21 sit in the tabular list?: Certain conditions originating in the perinatal period (P00-P96), in the block Transitory endocrine and metabolic disorders specific to newborn (P70-P74).