ICD-10-CM 2027 diagnosis code
S27.331SLaceration of lung, unilateral, sequela
S27.331S is a valid, billable ICD-10-CM code for laceration of lung, unilateral, sequela. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
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 S27.331S
S27.331S is the ICD-10-CM diagnosis code for laceration of lung, unilateral, sequela. It belongs to category S27 (injury of other and unspecified intrathoracic organs), block S20-S29 (injuries to the thorax) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
The 7th character "S" means sequela: use it for complications or conditions that arise as a direct result of the original condition.
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 205 (Other Respiratory System Diagnoses with MCC, relative weight 1.8244) and DRG 206 (Other Respiratory System Diagnoses without MCC, relative weight 0.9257), in MDC 04 (Diseases and Disorders of the Respiratory 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 is exempt from present-on-admission (POA) reporting, so no POA indicator is required.
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 908.0 (late effect of internal injury to chest).
7th character
Ssequela
CC/MCC status for this injury by encounter: MCC for A; Neither CC nor MCC for D, S.
Other encounter types for S27.331:
Notes that apply from higher levels
Instructions written at a parent level also apply to S27.331S.
Broader instructions also apply from S20-S29 Injuries to the thorax and Chapter 19: Injury, poisoning and certain other consequences of external causes.
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 04 · Diseases and Disorders of the Respiratory System
ICD-9-CM equivalent
Converter →- 908.0Late effect of internal injury to chestapproximate
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 S27.331S
Is S27.331S billable?
- Yes. S27.331S is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
What does the "S" at the end of S27.331S mean?
- It is the 7th character for sequela. Per the official guidelines, use it for complications or conditions that arise as a direct result of the original condition.
Can S27.331S be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict S27.331S as a principal diagnosis.
Is S27.331S a CC or MCC?
- No. S27.331S is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does S27.331S group to?
- S27.331S is used in the MS-DRG v44.0 logic for MS-DRG 205 (Other Respiratory System Diagnoses with MCC) and MS-DRG 206 (Other Respiratory System Diagnoses 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 S27.331S?
- The CMS General Equivalence Mappings map S27.331S to ICD-9-CM 908.0.