ICD-10-CM 2027 diagnosis code
S82.231CDisplaced oblique fracture of shaft of right tibia, initial encounter for open fracture type IIIA, IIIB, or IIIC
S82.231C is a valid, billable ICD-10-CM code for displaced oblique fracture of shaft of right tibia, initial encounter for open fracture type iiia, iiib, or iiic. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Displ oblique fx shaft of r tibia, 7thC
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 S82.231C
S82.231C is the ICD-10-CM diagnosis code for displaced oblique fracture of shaft of right tibia, initial encounter for open fracture type IIIA, IIIB, or IIIC. It belongs to category S82 (fracture of lower leg, including ankle), block S80-S89 (injuries to the knee and lower leg) 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 "C" means initial encounter for open fracture type IIIA, IIIB, or IIIC: use it while the patient is receiving active treatment for the condition.
As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 562 (Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh with MCC, relative weight 1.398), DRG 563 (Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh without MCC, relative weight 0.8985), DRG 963 (Other Multiple Significant Trauma with MCC, relative weight 2.6363), DRG 964 (Other Multiple Significant Trauma with CC, relative weight 1.4972) and DRG 965 (Other Multiple Significant Trauma without CC/MCC, relative weight 1.0059), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue) and MDC 24 (Multiple Significant Trauma), 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 823.30 (open fracture of shaft of tibia alone).
7th character
Cinitial encounter for open fracture type IIIA, IIIB, or IIIC
CC/MCC status for this injury by encounter: CC for A, K, M, N, P, Q, R; MCC for B, C; Neither CC nor MCC for D, E, F, G, H, J, S.
Other encounter types for S82.231:
Notes that apply from higher levels
Instructions written at a parent level also apply to S82.231C.
› From S82 Fracture of lower leg, including ankle
- A fracture not indicated as displaced or nondisplaced should be coded to displaced
- A fracture not indicated as open or closed should be coded to closed
- The open fracture designations are based on the Gustilo open fracture classification
- fracture of malleolus
- traumatic amputation of lower leg (S88.-)
Broader instructions also apply from S80-S89 Injuries to the knee and lower leg 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 08 · Diseases and Disorders of the Musculoskeletal System and Connective Tissue
ICD-9-CM equivalent
Converter →- 823.30Open fracture of shaft of tibia aloneapproximate
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 S82.231C
Is S82.231C billable?
- Yes. S82.231C is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
What does the "C" at the end of S82.231C mean?
- It is the 7th character for initial encounter for open fracture type IIIA, IIIB, or IIIC. Per the official guidelines, use it while the patient is receiving active treatment for the condition.
Can S82.231C be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict S82.231C as a principal diagnosis.
Is S82.231C a CC or MCC?
- S82.231C is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.
What DRG does S82.231C group to?
- S82.231C is used in the MS-DRG v44.0 logic for MS-DRG 562 (Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh with MCC), MS-DRG 563 (Fracture, Sprain, Strain and Dislocation Except Femur, Hip, Pelvis and Thigh without MCC), MS-DRG 963 (Other Multiple Significant Trauma with MCC), MS-DRG 964 (Other Multiple Significant Trauma with CC) and MS-DRG 965 (Other Multiple Significant Trauma without CC/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 S82.231C?
- The CMS General Equivalence Mappings map S82.231C to ICD-9-CM 823.30.