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ICD-10-CM 2027 diagnosis code

S82.024NNondisplaced longitudinal fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

✓ Billable / specificPOA exemptRequires 7th characterCC — complication/comorbidity

S82.024N is a valid, billable ICD-10-CM code for nondisplaced longitudinal fracture of right patella, subsequent encounter for open fracture type iiia, iiib, or iiic with nonunion. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Nondisp longitud fx r patella, 7thN

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 S82.024N

S82.024N is the ICD-10-CM diagnosis code for nondisplaced longitudinal fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion. 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 "N" means subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion: use it for encounters after active treatment, while the patient is healing or recovering.

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" 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 564 (Other Musculoskeletal System and Connective Tissue Diagnoses with MCC, relative weight 1.4908), DRG 565 (Other Musculoskeletal System and Connective Tissue Diagnoses with CC, relative weight 0.9783) and DRG 566 (Other Musculoskeletal System and Connective Tissue Diagnoses without CC/MCC, relative weight 0.7378), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), 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 733.82 (nonunion of fracture).

7th character

Nsubsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

CC/MCC status for this injury by encounter: CC for A, B, C, K, M, N, P, Q, R; Neither CC nor MCC for D, E, F, G, H, J, S.

Other encounter types for S82.024:

Notes that apply from higher levels

Instructions written at a parent level also apply to S82.024N.

› From S82 Fracture of lower leg, including ankle
Note
  • 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
Includes
  • fracture of malleolus
Excludes1
  • traumatic amputation of lower leg (S88.-)
Excludes2
  • fracture of foot, except ankle (S92.-)
  • periprosthetic fracture around internal prosthetic ankle joint (M97.2)
  • periprosthetic fracture around internal prosthetic implant of knee joint (M97.1-)

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.

ICD-9-CM equivalent

Converter →
  • 733.82Nonunion of fractureapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

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

Common questions about S82.024N

Is S82.024N billable?

Yes. S82.024N is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

What does the "N" at the end of S82.024N mean?

It is the 7th character for subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion. Per the official guidelines, use it for encounters after active treatment, while the patient is healing or recovering.

Can S82.024N be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict S82.024N as a principal diagnosis.

Is S82.024N a CC or MCC?

S82.024N is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does S82.024N group to?

S82.024N is used in the MS-DRG v44.0 logic for MS-DRG 564 (Other Musculoskeletal System and Connective Tissue Diagnoses with MCC), MS-DRG 565 (Other Musculoskeletal System and Connective Tissue Diagnoses with CC) and MS-DRG 566 (Other Musculoskeletal System and Connective Tissue Diagnoses 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 S82.024N?

The CMS General Equivalence Mappings map S82.024N to ICD-9-CM 733.82.