ICD-10-CM Tabular Index · Chapter 18 · FY 2027 R70–R79
Abnormal findings on examination of blood, without diagnosis (R70-R79) ICD-10-CM
The R70–R79 section covers abnormal findings on examination of blood, without diagnosis with 60 ICD-10-CM diagnosis codes, of which 45 are billable in fiscal year 2027. The section is organized into the 9 code ranges listed below.
✓ Built from the official CMS FY 2027 datasetEffective Oct 1, 2026 – Sep 30, 2027
9
Code Ranges
60
Diagnosis Codes
45
Billable Codes
R70–R79
Code Range
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
abnormal findings on antenatal screening of mother O28
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the R70–R79 Code Range
Blood examinations can show an abnormal result without establishing a diagnosis. These categories group those findings by the part of the blood examination involved.
R70 separates a raised blood sedimentation rate from abnormal plasma viscosity. R71 concerns red blood cell abnormalities, while R73 concerns elevated blood sugar. R74 groups abnormal serum enzyme levels by the enzymes identified or leaves the enzyme unspecified.
R75 identifies inconclusive laboratory evidence of HIV. R76 separates raised antibody levels, a nonspecific tuberculosis test reaction, and other immune-related serum findings. R77 distinguishes abnormalities of albumin, globulin, and alphafetoprotein from other plasma protein findings.
R78 sorts findings by the drug or other substance found in blood, including alcohol and heavy metals. R79 groups other blood chemistry findings, including abnormal mineral levels and blood clotting profiles.
FY 2027 changes: The FY 2027 ICD-10-CM update, effective October 1, 2026, added R78.72 and deleted R76.8.
Questions About This Page
How many codes are in the R70-R79 range?
The R70-R79 range contains 60 ICD-10-CM diagnosis codes in FY 2027. 45 of them are billable, and the rest are category headers that organize the section.
What conditions does R70-R79 cover?
The range covers abnormal findings on examination of blood, without diagnosis. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
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.
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.
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.
Nonconclusive HIV-test finding in infants
Type 1 Excludes
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.
asymptomatic human immunodeficiency virus [HIV] infection status Z21
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.
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
code to identify any retained foreign body, if applicable Z18
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
mental or behavioral disorders due to psychoactive substance use F10F19
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
code to identify any retained foreign body, if applicable Z18
Type 1 Excludes
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.
specific findings indicating disorder of amino-acid metabolism E70E72
specific findings indicating disorder of carbohydrate metabolism E73E74
specific findings indicating disorder of lipid metabolism E75
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
