ICD-10-CM 2026 · Effective October 1, 2025

ICD-10 E83.42

Billable / Specific

Hypomagnesemia

E83
Block
0
Synonyms
9
LCDs
4
Payer Policies
1
Linked CPTs

About ICD-10-CM E83.42

ICD-10-CM code E83.42 represents Hypomagnesemia. This is a billable/specific code in the Endocrine, Nutritional, and Metabolic chapter (block E83). The 2026 edition of ICD-10-CM E83.42 became effective on October 1, 2025.

Medicare LCD Coverage for E83.42

Local Coverage Determinations (LCDs) from CMS MACs that list E83.42 as a covered diagnosis.

9 LCDs

Showing top 9. Click a CPT for full coverage scope.

CMS LCD: Billing and Coding: Magnesium
Article ID: 59186, Effective: 2025-10-01 00:00:00, 4358 covered, 0 non-covered
CPT 83735 →
CMS LCD: Billing and Coding: Parathormone (Parathyroid Hormone)
Article ID: 57122, Effective: 2025-12-18 00:00:00, 142 covered, 1 non-covered
CPT 83970 →
CMS LCD: Billing and Coding: Electrocardiograms
Article ID: 57326, Effective: 2025-11-06 00:00:00, 2736 covered, 0 non-covered
CPT 93000 →
CMS LCD: Billing and Coding: Electrocardiograms
Article ID: 57326, Effective: 2025-11-06 00:00:00, 2736 covered, 0 non-covered
CPT 93041 →
CMS LCD: Billing and Coding: Electrocardiograms
Article ID: 57326, Effective: 2025-11-06 00:00:00, 2736 covered, 0 non-covered
CPT 93040 →
CMS LCD: Billing and Coding: Electrocardiograms
Article ID: 57326, Effective: 2025-11-06 00:00:00, 2736 covered, 0 non-covered
CPT 93042 →
CMS LCD: Billing and Coding: Electrocardiograms
Article ID: 57326, Effective: 2025-11-06 00:00:00, 2736 covered, 0 non-covered
CPT 93005 →
CMS LCD: Billing and Coding: Electrocardiograms
Article ID: 57326, Effective: 2025-11-06 00:00:00, 2736 covered, 0 non-covered
CPT 93010 →
CMS LCD: Billing and Coding: Serum Magnesium
Article ID: 57189, Effective: 2025-10-16 00:00:00, 1405 covered, 0 non-covered
CPT 83735 →

Commercial Payer Coverage

Coverage policies from major commercial payers referencing E83.42.

4 policies

4 Medicare

Billing and Coding: Parathormone (Parathyroid Hormone)
Policy ID: ART-57122
Billing and Coding: Serum Magnesium
Policy ID: ART-57189
Billing and Coding: Electrocardiograms
Policy ID: ART-57326
Billing and Coding: Magnesium
Policy ID: ART-59186

CPT Codes Commonly Billed with E83.42

Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.

1 linkages
  • 83970 CMS LCD: Billing and Coding: Parathormone (Parathyroid Hormone) CMS LCD

Convert E83.42 to ICD-9-CM

Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.

ICD-10ICD-9Mapping Flags
E83.42 2752 10000

Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).

ICD-10 E83.42, Billing FAQ

Is ICD-10 code E83.42 billable? +

Yes, E83.42 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.

What CPT codes are commonly billed with E83.42? +

Procedures frequently paired with E83.42 include: 83970.

What ICD-9 codes does E83.42 map to? +

Per CMS GEMs, E83.42 maps to ICD-9 codes: 2752. Useful for legacy data review and historical claim analysis.

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Reviewed by the PayerReady Medical Coding Team

Verified against the CMS 2026 code set on May 31, 2026.

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