Hypocalcemia, severe or symptomatic

ICD10 Diagnosis
Dx:	Hypocalcemia, severe or symptomatic
ICD10 code:	E83.51
Pre-ICD10 counterpart:	Hypocalcemia Ca Less Than 1.8
Charlson/ALERT Scale:	none
APACHE Como Component:	none
APACHE Acute Component:	2019-0: Metabolic/Renal NOS, 2019-0: Renal/Metabolic NOS
Start Date:
Stop Date:
External ICD10 Documentation	ICD-10 CM Wikipedia ICD-10 Wikipedia WHO ICD10 documentation ICD10data.com

This diagnosis is a part of ICD10 collection.

• SMW
  • 2019-01-01
  • 2999-12-31
  • E83.51

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Additional Info

• NOTE: The cutoff values immediately below are for total serum calcium. For patients with substantial hypoalbuminemia using total calcium to define hypcalcemia is a problem --- see the "Be Aware" note below.
• The parameters for coding hypocalcemia are any of the following 3 items: (This change is active as of Feb 12, 2018)
  • Ca++ < 1.8 OR
  • Any Ca++ < 2.2 AND in the presence of signs or symptoms believed to be due to hypocalcemia OR
  • Any Ca++ < 2.2 with active treatment for hypocalcemia
• Main signs and symptoms of hypocalcemia are:
  • GI - nausea\vomiting, abdominal pain
  • Neuromuscular - paresthesias (esp. acral, perioral), muscle cramps\spasms, hyperreflexia * tetany, weakness, fatigue, seizures, extrapyramidal movement disorders, abnormal EEG
  • cardiovascular - long QT interval, hypotension (if acute), arrythmias
  • miscellaneous - secondary hypoparathyroidism
• Be Aware: These cutoff numbers are all for total serum calcium. But it's actually the ionized serum calcium that's relevant and causes symptoms when high or low -- AND the usual range for total calcium is altered (downwards) in patients with low serum albumin. So you can have a completely normal ionized calcium with a very low total calcium if the albumin is significantly low. Furthermore, the old "correction" of total calcium for measured albumin does not work well at all. Thus, to identify truly low circulating calcium in the presence of more than trivial hypoalbuminemia, it's necessary to measure an ionized calcium.
  • So to diagnose ionized hypocalcemia use these thresholds for ionized (not total) serum calcium:
    • Ca++ <0.9 regardless, OR <1.15 with symptoms or being treated for it

Alternate ICD10s to consider coding instead or in addition

• Tetany
• Disorder of mineral metabolism, NOS
• Electrolyte disorder, NOS
• Hyperparathyroidism
• Parathyroid disorder, NOS
• Cushing's syndrome, NOS
• Vitamin D deficiency

Candidate Combined ICD10 codes

Related CCI Codes

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ICD10 Categories: ANCA-associated Vasculitis (AAV), Abdominal trauma, Abortion, Acute intoxication, Addiction, Adrenal Insufficiency, Adverse effect, Alcohol related, Allergy, Anemia, Anesthetic related, Aneurysm, Antibiotic resistance, Antidepressant related, Aortic Aneurysm, Arrhythmia, Arterial thromboembolism, Asthma, Atherosclerosis, Awaiting/delayed transfer, Bacteria, Benign neoplasm, Breast disease, Burn, COVID, Cannabis related, Cardiac septum problem, Cardiovascular, Cerebral Hemorrhage/Stroke, Chemical burn, Chronic kidney disease, Cirrhosis, Cocaine related, Decubitus ulcer, Delirium, Dementia, Diabetes, Diagnosis implying death, Double duty pathogen, ENT, Encephalitis, Encephalopathy, Endocrine disorder, Endocrine neoplasm, Exposure, Eye, Female genital neoplasm, Fistula, Fracture, Fungus, GI ulcer, Gastroenteritis, Gastrointestinal, Gastrointestinal neoplasm, Hallucinogen related, Has one, Head trauma, Head trauma (old), Healthcare contact, Heart valve disease, Heme/immunology, Heme/immunology neoplasm, Hemophilia, Hemorrhage, Hepatitis, Hereditary/congenital, Hernia, Hypertension, Hypotension, Iatrogenic, Iatrogenic infection, Iatrogenic mechanism, Imaging, Infection requiring pathogen, Infection with implied pathogen, Infectious disease, Inflammatory Bowel Disease, Influenza, Inhalation, Intra-abdominal infection, Ischemia, Ischemic gut, Ischemic heart disease, Joint/ligament trauma, Leukemia, Liver disease, Liver failure, Lower limb trauma, Lower respiratory tract infection, Lymphoma, Male genital neoplasm, Mechanism, Meningitis, Metabolic/nutrition, Metastasis, Misc, Muscle problem, Muscles/tendon trauma, Musculoskeletal/soft tissue, Musculoskeletal/soft tissue neoplasm... further results