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ICD-10-CM 2027 diagnosis code

R93.1Abnormal findings on diagnostic imaging of heart and coronary circulation

✓ Billable / specific

R93.1 is a valid, billable ICD-10-CM code for abnormal findings on diagnostic imaging of heart and coronary circulation. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Abnormal findings on dx imaging of heart and cor circ

Looking up by condition? See ICD-10 code for Pancake heart.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About R93.1

R93.1 is the ICD-10-CM diagnosis code for abnormal findings on diagnostic imaging of heart and coronary circulation. It belongs to category R93 (abnormal findings on diagnostic imaging of other body structures), block R90-R94 (abnormal findings on diagnostic imaging and in function studies, without diagnosis) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within R93 (abnormal findings on diagnostic imaging of other body structures), R93.1 is specifically for abnormal findings on diagnostic imaging of heart and coronary circulation. Related codes cover abnormal findings on diagnostic imaging of skull and head, not elsewhere classified (R93.0), abnormal findings on diagnostic imaging of liver and biliary tract (R93.2), abnormal findings on diagnostic imaging of other parts of digestive tract (R93.3), abnormal findings on diagnostic imaging of urinary organs (R93.4), abnormal findings on diagnostic imaging of other abdominal regions, including retroperitoneum (R93.5), abnormal findings on diagnostic imaging of limbs (R93.6), abnormal findings on diagnostic imaging of other parts of musculoskeletal system (R93.7), abnormal findings on diagnostic imaging of other specified body structures (R93.8) and 1 more.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 302 (Atherosclerosis with MCC, relative weight 1.1984) and DRG 303 (Atherosclerosis without MCC, relative weight 0.6612), in MDC 05 (Diseases and Disorders of the Circulatory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 793.2 (nonspecific (abnormal) findings on radiological and other examination of other intrathoracic organs).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Abnormal echocardiogram NOS
  • Abnormal heart shadow

Notes that apply from higher levels

Instructions written at a parent level also apply to R93.1.

Broader instructions also apply from R90-R94 Abnormal findings on diagnostic imaging and in function studies, without diagnosis and Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.

Alphabetic index entries

8 entries

Terms in the official ICD-10-CM index that lead to R93.1.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 05 · Diseases and Disorders of the Circulatory System

ICD-9-CM equivalent

Converter →
  • 793.2Nonspecific (abnormal) findings on radiological and other examination of other intrathoracic organsapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about R93.1

Is R93.1 billable?

Yes. R93.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can R93.1 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict R93.1 as a principal diagnosis.

Is R93.1 a CC or MCC?

No. R93.1 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does R93.1 group to?

R93.1 is used in the MS-DRG v44.0 logic for MS-DRG 302 (Atherosclerosis with MCC) and MS-DRG 303 (Atherosclerosis without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for R93.1?

The CMS General Equivalence Mappings map R93.1 to ICD-9-CM 793.2.