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ICD-10-CM 2027 diagnosis code

R78.72Abnormal gadolinium level in blood

✓ Billable / specificNew for 2027

R78.72 is a valid, billable ICD-10-CM code for abnormal gadolinium level in blood. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code last changed in FY2027 (effective October 1, 2026). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About R78.72

R78.72 is the ICD-10-CM diagnosis code for abnormal gadolinium level in blood. It belongs to category R78 (findings of drugs and other substances, not normally found in blood), block R70-R79 (abnormal findings on examination of blood, 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 R78.7 (finding of abnormal level of heavy metals in blood), R78.72 is specifically for abnormal gadolinium level in blood. Related codes cover abnormal lead level in blood (R78.71) and finding of abnormal level of heavy metals in blood (R78.79).

Don't report R78.72 together with the conditions in its Excludes1 note: toxic effect of gadolinium (T56.82-).

Use an additional code to identify any retained foreign body, if applicable (Z18.-).

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 947 (Signs and Symptoms with MCC, relative weight 1.261) and DRG 948 (Signs and Symptoms without MCC, relative weight 0.7835), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), 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 was added in FY2027, effective October 1, 2026.

Coding notes

Excludes1Not coded here — never report together with this code
  • toxic effect of gadolinium (T56.82-)

Notes that apply from higher levels

Instructions written at a parent level also apply to R78.72.

› From R78 Findings of drugs and other substances, not normally found in blood
Excludes2
  • mental or behavioral disorders due to psychoactive substance use (F10-F19)
Use additional code
  • code to identify any retained foreign body, if applicable (Z18.-)

Broader instructions also apply from R70-R79 Abnormal findings on examination of blood, without diagnosis and Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to R78.72.

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 23 · Factors Influencing Health Status and Other Contacts with Health Services

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
  • FY2027 (effective 10/1/2026): Added

Common questions about R78.72

Is R78.72 billable?

Yes. R78.72 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can R78.72 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict R78.72 as a principal diagnosis.

Is R78.72 a CC or MCC?

No. R78.72 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does R78.72 group to?

R78.72 is used in the MS-DRG v44.0 logic for MS-DRG 947 (Signs and Symptoms with MCC) and MS-DRG 948 (Signs and Symptoms without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

Did R78.72 change for 2027?

Yes. For FY2027 (effective October 1, 2026) it was added to the code set.