ICD-10-CM 2027 diagnosis code
I97.0Postcardiotomy syndrome
I97.0 is a valid, billable ICD-10-CM code for postcardiotomy syndrome. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Looking up by condition? See ICD-10 code for Postcardiotomy syndrome, ICD-10 code for Postvalvulotomy syndrome, ICD-10 code for Postcommissurotomy syndrome.
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 I97.0
I97.0 is the ICD-10-CM diagnosis code for Postcardiotomy syndrome. It belongs to category I97 (intraoperative and postprocedural complications and disorders of circulatory system, not elsewhere classified), block I95-I99 (other and unspecified disorders of the circulatory system) and chapter 9 (diseases of the circulatory system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within I97 (intraoperative and postprocedural complications and disorders of circulatory system, not elsewhere classified), I97.0 is specifically for Postcardiotomy syndrome. Related codes cover other postprocedural cardiac functional disturbances (I97.1), Postmastectomy lymphedema syndrome (I97.2), postprocedural hypertension (I97.3), intraoperative hemorrhage and hematoma of a circulatory system organ or structure complicating a procedure (I97.4), accidental puncture and laceration of a circulatory system organ or structure during a procedure (I97.5), postprocedural hemorrhage, hematoma and seroma of a circulatory system organ or structure following a procedure (I97.6), intraoperative cardiac functional disturbances (I97.7) and other intraoperative and postprocedural complications and disorders of the circulatory system, not elsewhere classified (I97.8).
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 314 (Other Circulatory System Diagnoses with MCC, relative weight 2.0873), DRG 315 (Other Circulatory System Diagnoses with CC, relative weight 0.9508), DRG 316 (Other Circulatory System Diagnoses without CC/MCC, relative weight 0.6677), DRG 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), in MDC 05 (Diseases and Disorders of the Circulatory System) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), 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 429.4 (functional disturbances following cardiac surgery).
Notes that apply from higher levels
Instructions written at a parent level also apply to I97.0.
› From I97 Intraoperative and postprocedural complications and disorders of circulatory system, not elsewhere classified
- postprocedural shock (T81.1-)
Broader instructions also apply from Chapter 9: Diseases of the circulatory system.
Alphabetic index entries
14 entriesTerms in the official ICD-10-CM index that lead to I97.0.
- Complication (s) (from) (of) › circulatory system › postprocedural › following cardiac surgery › postcardiotomy syndrome
- Complication (s) (from) (of) › circulatory system › postprocedural › postcardiotomy syndrome
- Complication (s) (from) (of) › surgical procedure (on) › postcardiotomy syndrome
- Complication (s) (from) (of) › surgical procedure (on) › postcommissurotomy syndrome
- Complication (s) (from) (of) › surgical procedure (on) › postvalvulotomy syndrome
- Injury › postcardiac surgery (syndrome)
- Postcardiotomy syndrome
- Postcommissurotomy syndrome
- Postvalvulotomy syndrome
- Syndrome › Dressler's (postmyocardial infarction) › postcardiotomy
- Syndrome › postcardiac injury › postcardiotomy
- Syndrome › postcardiotomy
- Syndrome › postcommissurotomy
- Syndrome › postvalvulotomy
Codes whose notes reference I97.0
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
MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period
MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period
ICD-9-CM equivalent
Converter →- 429.4Functional disturbances following cardiac surgeryapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
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 I97.0
Is I97.0 billable?
- Yes. I97.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I97.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I97.0 as a principal diagnosis.
Is I97.0 a CC or MCC?
- No. I97.0 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does I97.0 group to?
- I97.0 is used in the MS-DRG v44.0 logic for MS-DRG 314 (Other Circulatory System Diagnoses with MCC), MS-DRG 315 (Other Circulatory System Diagnoses with CC), MS-DRG 316 (Other Circulatory System Diagnoses without CC/MCC), MS-DRG 791 (Prematurity with Major Problems) and MS-DRG 793 (Full Term Neonate with Major Problems). 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 I97.0?
- The CMS General Equivalence Mappings map I97.0 to ICD-9-CM 429.4.