ICD-10-CM 2027
ICD-10 code for familial hypophosphatemia
From the official ICD-10-CM alphabetic index entry “Hypophosphatemia, hypophosphatasia (acquired) (congenital) (renal) › familial”. Page updated September 29, 2026.
About coding familial hypophosphatemia
The ICD-10-CM code for familial hypophosphatemia is E83.31 (Familial hypophosphatemia).
Within E83.3 (disorders of phosphorus metabolism and phosphatases), E83.31 is specifically for familial hypophosphatemia. Related codes cover disorder of phosphorus metabolism, unspecified (E83.30), hereditary vitamin D-dependent rickets (type 1) (type 2) (E83.32) and other disorders of phosphorus metabolism (E83.39).
Don't report E83.31 together with the conditions in its Excludes1 note: vitamin D-deficiency rickets (E55.0).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for E83.31)
- vitamin D-deficiency rickets (E55.0)
Common questions about familial hypophosphatemia ICD-10 codes
What is the ICD-10 code for familial hypophosphatemia?
- E83.31 — Familial hypophosphatemia.
Is E83.31 billable?
- Yes. E83.31 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E83.31 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E83.31 as a principal diagnosis.
Is E83.31 a CC or MCC?
- No. E83.31 is neither a CC nor an MCC under MS-DRG v44.0.