2026 ICD-10-CM Diagnosis Code R79.0Abnormal level of blood mineral
ICD-10-CM Codes›R00–R99›R70-R79›R79
- Billable — Valid for Submission
- Not Chronic
R79.0 is a billable ICD-10-CM diagnosis code for abnormal level of blood mineral. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 947 through 948. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Abnormal findings without diagnosis.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Abnormal blood test
- Abnormal cobalt level in blood
- Abnormal zinc level in blood
- Blood copper level above reference range
- Blood copper outside reference range
- Blood hematinic levels - finding
- Blood magnesium above reference range
- Blood magnesium below reference range
- Blood magnesium outside reference range
- GRACILE syndrome
- High cobalt level in blood
- High heavy metal level in blood
- Iron kinetic levels - finding
- Iron kinetics outside reference range
- Iron profile outside reference range
- Low cobalt level in blood
- Mineral level in blood outside reference range
- Potassium level - finding
- Serum chloride above reference range
- Serum chloride below reference range
- Serum chloride level outside reference range
- Serum copper above reference range
- Serum copper below reference range
- Serum copper level outside reference range
- Serum electrolyte levels - finding
- Serum iron above reference range
- Serum iron below reference range
- Serum iron level outside reference range
- Serum potassium level below reference range
- Serum sodium above reference range
- Serum sodium below reference range
- Serum sodium level outside reference range
- Serum zinc above reference range
- Serum zinc level below reference range
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Abnormal blood level of cobalt
- Abnormal blood level of copper
- Abnormal blood level of iron
- Abnormal blood level of magnesium
- Abnormal blood level of mineral NEC
- Abnormal blood level of zinc
Type 1 Excludes
- abnormal level of lithium R78.89
- disorders of mineral metabolism E83
- neonatal hypomagnesemia P71.2
- nutritional mineral deficiency E58 E61
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Abnormal, abnormality, abnormalities - See Also: Anomaly;
- minerals - R79.0
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Abnormal, abnormality, abnormalities
- blood level (of)
- cobalt
- Abnormal, abnormality, abnormalities
- blood level (of)
- copper
- Abnormal, abnormality, abnormalities
- blood level (of)
- iron
- Abnormal, abnormality, abnormalities
- blood level (of)
- magnesium
- Abnormal, abnormality, abnormalities
- blood level (of)
- mineral NEC
- Abnormal, abnormality, abnormalities
- blood level (of)
- zinc
- Abnormal, abnormality, abnormalities
- chemistry, blood
- minerals
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Blood
Your blood is made up of liquid and solids. The liquid part, called plasma, is made of water, salts, and protein. Over half of your blood is plasma. The solid part of your blood contains red blood cells, white blood cells, and platelets.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert R79.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About R79.0Overview
Is R79.0 (Other abnormal findings of blood chemistry) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report abnormal level of blood mineral on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does R79.0 group to?
When abnormal level of blood mineral is the principal diagnosis on an inpatient stay, it groups to MS-DRG 947, 948, with relative weights from 0.8005 to 1.2694 depending on complications. Higher weights mean higher Medicare reimbursement.
Can R79.0 be a principal diagnosis?
Use it with care. This is a symptom code, so once a definitive diagnosis explaining the abnormal level of blood mineral is established, that condition takes the principal position instead.
What is the ICD-9 equivalent of R79.0?
Under the General Equivalence Mappings, abnormal level of blood mineral converts to ICD-9-CM 790.6 (abn blood chemistry NEC). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
