E83.39 ICD-10-CM Code: Other disorders of phosphorus metabolism
E83.39 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools
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FY 2026 Apr update / Endocrine, nutritional and metabolic diseases (E00-E89) / Metabolic disorders (E70-E88)
E83.39
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceOther disorders of phosphorus metabolism
Problems with phosphorus metabolism that are not covered by other specific phosphorus disorder codes.
Buddy Insight
This code captures specified phosphorus metabolism disorders that are not familial hypophosphatemia, such as tumor-induced osteomalacia, acquired hypophosphatemia, or hyperphosphatemia from non-renal causes.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
MappedHCC 43
Code-level coefficient reference
Code Book Path
Inclusion Terms
Official- Acid phosphatase deficiency
- Hypophosphatasia
Excludes 2
Official- Ehlers-Danlos syndromes (Q79.6-)Inherited from E70-E88, E83.3
- disorders of pyrophosphate metabolism (E83.82-)Inherited from E70-E88, E83.3
Related Codes
Includes
OfficialNo Includes notes are included in this display for E83.39. Check the code and parent instructions in the Code Book.
Excludes 1
Official- transitory endocrine and metabolic disorders specific to newborn (P70-P74)Inherited from E00-E89, E70-E88, E83, E83.3
- androgen insensitivity syndrome (E34.5-)Inherited from E00-E89, E70-E88, E83, E83.3
- congenital adrenal hyperplasia (E25.0)Inherited from E00-E89, E70-E88, E83, E83.3
- hemolytic anemias attributable to enzyme disorders (D55.-)Inherited from E00-E89, E70-E88, E83, E83.3
- Marfan syndrome (Q87.4-)Inherited from E00-E89, E70-E88, E83, E83.3
- 5-alpha-reductase deficiency (E29.1)Inherited from E00-E89, E70-E88, E83, E83.3
- dietary mineral deficiency (E58-E61)Inherited from E00-E89, E70-E88, E83, E83.3
- parathyroid disorders (E20-E21)Inherited from E00-E89, E70-E88, E83, E83.3
- vitamin D deficiency (E55.-)Inherited from E00-E89, E70-E88, E83, E83.3
- adult osteomalacia (M83.-)Inherited from E00-E89, E70-E88, E83, E83.3
- osteoporosis (M80.-)Inherited from E00-E89, E70-E88, E83, E83.3
Code First
OfficialNo Code First sequencing instructions are included in this display for E83.39. Check the code and parent instructions in the Code Book.
Use Additional
OfficialNo Use Additional Code instructions are included in this display for E83.39. Check the code and parent instructions in the Code Book.
Code Also
OfficialNo Code Also instructions are included in this display for E83.39. Check the code and parent instructions in the Code Book.
Buddy Documentation Tip
MEAT Support
Audit Caution
Common Mistakes
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is E83.39 an HCC code?
E83.39 has no mapping under the current CMS-HCC V28 community payment model. E83.39 has a separate mapping under the Part D RxHCC model (HCC 43 (Pituitary, Adrenal Gland, and Other Endocrine and Metabolic Disorders)); the applicable result needs member context.
- Code
- E83.39
- Description
- Other disorders of phosphorus metabolism
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- Yes
- Payment year
- 2026
HCC Category Mapping
These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.
Work E83.39 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →
MEAT review for E83.39
For E83.39, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule.
- MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
- EEvaluate: test results, medication response, or physical findings reviewed by the provider
- AAssess: explicit mention in the assessment or plan with acknowledgment of status
- TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis
Coder workflow notes
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What This Code Means
E83.39 is the ICD-10-CM diagnosis code for other disorders of phosphorus metabolism. Problems with phosphorus metabolism that are not covered by other specific phosphorus disorder codes. E83.39 sits in the ICD-10-CM chapter for endocrine, nutritional and metabolic diseases (e00-e89), within the section covering metabolic disorders (e70-e88).
E83.39 has no mapping under the current CMS-HCC V28 community payment model. E83.39 has a separate mapping under the Part D RxHCC model (HCC 43 (Pituitary, Adrenal Gland, and Other Endocrine and Metabolic Disorders)); the applicable result needs member context. Do not assign V28 risk adjustment value from this page; verify the applicable model and payment year before using this code for risk adjustment.
Ensure documentation specifies the nature of the phosphorus disorder before using this code.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for E83.39 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Ensure documentation specifies the nature of the phosphorus disorder before using this code
- •Review for more specific codes related to high or low phosphorus levels
Clinical Significance
This code captures specified phosphorus metabolism disorders that are not familial hypophosphatemia, such as tumor-induced osteomalacia, acquired hypophosphatemia, or hyperphosphatemia from non-renal causes. These conditions affect bone health and require targeted management.
Documentation Requirements
- ✓Specific phosphorus metabolism disorder identified by the provider
- ✓Etiology documented (tumor-induced, medication-related, malabsorption-related)
- ✓Serum phosphorus levels and related laboratory data
- ✓Clinical manifestations (bone pain, fractures, muscle weakness)
- ✓Treatment plan and monitoring schedule
Commonly Confused Codes
- •E83.31: Familial hypophosphatemia: use for confirmed hereditary hypophosphatemia; has HCC mapping
- •E83.30: Disorder of phosphorus metabolism, unspecified: less specific; use only when type is unknown
- •N25.0: Renal osteodystrophy: phosphorus disorder secondary to chronic kidney disease
- •E21.3: Hyperparathyroidism, unspecified: may cause phosphorus abnormalities but is a parathyroid disorder