ICD-10-CM 2027 diagnosis code

R97Abnormal tumor markers

Not billable — use a more specific code

R97 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS, effective October 1, 2026. Updated September 29, 2026. About our data

About R97

R97 is the ICD-10-CM diagnosis code for abnormal tumor markers. It belongs to block R97 (abnormal tumor markers) and chapter 18 (symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: R97.0 ([CEA]), R97.1 (125]), R97.2 ([PSA]) and R97.8 (markers).

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

Specific codes under R97

Coding notes

Applicable toConditions and synonyms classified to this code

Elevated tumor associated antigens [TAA]
Elevated tumor specific antigens [TSA]

Notes that apply from higher levels

Instructions written at a parent level also apply to R97.

Broader instructions also apply from Chapter 18: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about R97

Is R97 billable?: No. R97 is a header code. Report one of its more specific subcodes instead.