2026 ICD-10-CM Diagnosis Code R79.89Other specified abnormal findings of blood chemistry

ICD-10-CM Codes›R00–R99›R70-R79›R79

ICD-10-CM R79.89
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R79.89 is a billable ICD-10-CM diagnosis code for other specified abnormal findings of blood chemistry. 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

ICD-10-CM Code
R79.89
Billable Status
Yes — Valid for Submission
Code Describes
Other specified abnormal findings of blood chemistry
Short Description
Other specified abnormal findings of blood chemistry
Same as the full description in the CMS dataset.
Parent Code
R79.8
Other specified abnormal findings of blood chemistry

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR70-R79Abnormal findings on examination of blood, without diagnosis
CategoryR79Other abnormal findings of blood chemistry
This CodeR79.89Other specified abnormal findings of blood chemistry

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Abnormal finding on antenatal screening of mother
  • Abnormally increased cellular element of blood
  • Acetonemia
  • Acidified serum test positive
  • Antenatal screening finding
  • Azotemia
  • Azotemia due to intrarenal disease
  • Basophil count outside reference range
  • Bicarbonate level - finding
  • Bilirubin level - finding
  • Bilirubin level above reference range
  • Blood cell count outside reference range
  • Blood compatibility - finding
  • Blood incompatible
  • Blood urate above reference range
  • Blood urate outside reference range
  • Blood urea above reference range
  • Blood urea below reference range
  • Blood urea outside reference range
  • Cerebroside above reference range
  • Cerebroside below reference range
  • Cholesterol esters below reference range
  • Cholesterol/high density lipoprotein ratio below reference range
  • Color of fluid - finding
  • Color of specimen - finding
  • Creatinine level - finding
  • Decreased estrogen level
  • Deep yellow color of blood specimen
  • Differential white cell count outside reference range
  • Down's screening blood test abnormal
  • Elevated serum chromium
  • Estradiol level above reference range
  • Estriol in serum above reference range
  • Estriol in serum below reference range
  • Estriol in serum outside reference range
  • Estriol level above reference range
  • Estriol level below reference range
  • Estrogen level above reference range
  • Euglobulin clot lysis time above reference range
  • Euglobulin clot lysis time below reference range
  • Fasting lipid profile above reference range
  • Fat globules in blood specimen
  • Female sex hormones - serum level - finding
  • Ferritin level below reference range
  • Finding of blood urea
  • Finding of color of blood
  • Finding of estriol level
  • Finding of fibrinolysis time
  • Finding of serum phenylalanine level
  • Finding of serum tumor marker level
  • Finding of vitamin B12 level
  • Folic acid above reference range
  • Folic acid below reference range
  • Full blood count borderline
  • Ganglioside above reference range
  • Ganglioside below reference range
  • Homocysteine level elevated
  • Ketonemia
  • Kleihauer test abnormal
  • L.E. cell level - finding
  • L.E. cells present
  • Lipid below reference range
  • Lipoprotein above reference range
  • Liver function test above reference range
  • Liver function tests outside reference range
  • Lymphocyte count outside reference range
  • Male sex hormones - serum level - finding
  • Megakaryocyte finding
  • Megakaryocytic maturation arrest
  • Methemalbuminemia
  • Monoclonal abnormal heavy chain protein devoid of light chains detected
  • Myelocytes in blood
  • Myelocytes present
  • Neutrophil count outside reference range
  • Pale color of blood specimen
  • Phenylalanine level - finding
  • Phospholipid above reference range
  • Phospholipid below reference range
  • Platelet count above reference range
  • Platelet count below reference range
  • Platelet count below reference range at birth
  • Platelet count outside reference range
  • Postrenal azotemia
  • Prerenal azotemia
  • Sensitized cell
  • Serum 5-nucleotidase level below reference range
  • Serum amino acid above reference range
  • Serum amino acid levels - finding
  • Serum amino acids outside reference range
  • Serum bicarbonate level outside reference range
  • Serum bilirubin above reference range
  • Serum bilirubin level - finding
  • Serum cholesterol outside reference range
  • Serum creatinine above reference range
  • Serum creatinine below reference range
  • Serum creatinine level - finding
  • Serum creatinine outside reference range
  • Serum estradiol above reference range
  • Serum female sex hormone above reference range
  • Serum female sex hormone below reference range
  • Serum ferritin level below reference range
  • Serum folate above reference range
  • Serum folate below reference range
  • Serum inorganic phosphate above reference range
  • Serum inorganic phosphate below reference range
  • Serum lipids above reference range
  • Serum male sex hormone above reference range
  • Serum male sex hormone below reference range
  • Serum phenylalanine above reference range
  • Serum phosphate level outside reference range
  • Serum T4 above reference range
  • Serum T4 below reference range
  • Serum thyroxine level outside reference range
  • Serum total protein above reference range
  • Serum total protein below reference range
  • Serum total protein outside reference range
  • Serum triglyceride levels - finding
  • Serum triglycerides above reference range
  • Serum tumor marker stage S0
  • Serum tumor marker stage S1
  • Serum tumor marker stage S2
  • Serum tumor marker stage S3
  • Serum vitamin B12 above reference range
  • Serum vitamin B12 below reference range
  • Serum vitamin B12 level - finding
  • Sphingomyelin above reference range
  • Sphingomyelin below reference range
  • Thyroid hormone level below reference range
  • Thyroxine level below reference range
  • Total iron binding capacity above reference range
  • Triglyceride level - finding
  • Urea level - finding
  • Vitamin B12 above reference range
  • Vitamin B12 level below reference range
  • Vitamin K above reference range
  • Vitamin K1 above reference range
  • White blood cell count outside reference range
  • Whole blood folate above reference range
  • Whole blood folate below reference range
  • Whole blood folate level - finding

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Abnormal, abnormality, abnormalities
      • chemistry, blood
        • specified NEC
    • Abnormal, abnormality, abnormalities
      • liver function test
    • Acetonemia
    • Azotemia
    • Elevated, elevation
      • liver function
        • test
    • Elevated, elevation
      • troponin
    • Findings, abnormal, inconclusive, without diagnosis
      • liver function test
    • Melanemia

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SYM017
Abnormal findings without diagnosis
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Azotemia

    a biochemical abnormality referring to an elevation of blood urea nitrogen and creatinine. azotemia can be produced by kidney diseases or other extrarenal disorders. when azotemia becomes associated with a constellation of clinical signs, it is termed uremia.

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 R79.89 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
790.6 Abn blood chemistry NEC
Approximate The match is approximate rather than exact.
ICD-9-CM
790.99 Oth nspcf finding blood
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About R79.89Overview

Is R79.89 (Other specified abnormal findings of blood chemistry) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other specified abnormal findings of blood chemistry on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does R79.89 group to?

When other specified abnormal findings of blood chemistry 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 R79.89 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the other specified abnormal findings of blood chemistry is established, that condition takes the principal position instead.

What is the ICD-9 equivalent of R79.89?

Under the General Equivalence Mappings, other specified abnormal findings of blood chemistry converts to ICD-9-CM 790.6 (abn blood chemistry NEC) and 790.99 (oth nspcf finding blood). 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.