Is E83.31 a billable ICD-10-CM code?

Yes. E83.31 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does E83.31 sit in the tabular list?

Endocrine, nutritional and metabolic diseases (E00-E89), in the block Metabolic disorders (E70-E88).

What cannot be coded together with E83.31?

E83.31 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

E83.31

E83.31 — Familial hypophosphatemia

Billable / specific codeICD-10-CM

E83.31 is a billable, specific ICD-10-CM code for familial hypophosphatemia. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

vitamin D-deficiency rickets (E55.0)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Vitamin D-resistant osteomalacia
Vitamin D-resistant rickets

Other codes that can never be billed with E83.31

These codes carry an Excludes1 note pointing at E83.31. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading E83.31 alone.

M83Adult osteomalacia
E55.0Rickets, active

Risk adjustment

E83.31 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

HCC 50 Amyloidosis, Porphyria, and Other Specified Metabolic Disorders0.648 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

E83.31 is named in 10 Medicare coverage policies — 10 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56416Billing and Coding: Assays for Vitamins and Metabolic Function
A56798Billing and Coding: Vitamin D Assay Testing
A56841Billing and Coding: Vitamin D; 25 hydroxy, includes fraction(s), if performed
A57122Billing and Coding: Parathormone (Parathyroid Hormone)

How E83.31 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 E83.31.

Hypophosphatemia, hypophosphatasia›familial
Osteomalacia›vitamin-D-resistant in adults
Rickets›vitamin-D-resistant
Osteomalacia›vitamin-D-resistant in adults›carpus
Osteomalacia›vitamin-D-resistant in adults›clavicle
Osteomalacia›vitamin-D-resistant in adults›femur
Osteomalacia›vitamin-D-resistant in adults›fibula
Osteomalacia›vitamin-D-resistant in adults›finger
Osteomalacia›vitamin-D-resistant in adults›humerus
Osteomalacia›vitamin-D-resistant in adults›ilium
Osteomalacia›vitamin-D-resistant in adults›ischium
Osteomalacia›vitamin-D-resistant in adults›metacarpus

Related codes at this level

Codes that share E83.3. If E83.31 is not quite right, the correct code is usually one of these.

Questions about E83.31

Is E83.31 a billable ICD-10-CM code?: Yes. E83.31 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does E83.31 sit in the tabular list?: Endocrine, nutritional and metabolic diseases (E00-E89), in the block Metabolic disorders (E70-E88).
What cannot be coded together with E83.31?: E83.31 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.