ICD-10-CM 2027 diagnosis code
S89.321DSalter-Harris Type II physeal fracture of lower end of right fibula, subsequent encounter for fracture with routine healing
S89.321D is a valid, billable ICD-10-CM code for salter-harris type ii physeal fracture of lower end of right fibula, subsequent encounter for fracture with routine healing. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Sltr-haris Type II physl fx low end r fibula, 7thD
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 S89.321D
S89.321D is the ICD-10-CM diagnosis code for Salter-Harris Type II physeal fracture of lower end of right fibula, subsequent encounter for fracture with routine healing. It belongs to category S89 (other and unspecified injuries of lower leg), 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 "D" means subsequent encounter for fracture with routine healing: use it for encounters after active treatment, while the patient is healing or recovering.
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 559 (Aftercare, Musculoskeletal System and Connective Tissue with MCC, relative weight 1.8088), DRG 560 (Aftercare, Musculoskeletal System and Connective Tissue with CC, relative weight 1.1238) and DRG 561 (Aftercare, Musculoskeletal System and Connective Tissue without CC/MCC, relative weight 0.8258), 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 V54.16 (aftercare for healing traumatic fracture of lower leg).
7th character
Dsubsequent encounter for fracture with routine healing
CC/MCC status for this injury by encounter: Neither CC nor MCC for A, D, G, S; CC for K, P.
Other encounter types for S89.321:
Notes that apply from higher levels
Instructions written at a parent level also apply to S89.321D.
› From S89 Other and unspecified injuries of lower leg
- A fracture not indicated as open or closed should be coded to closed
- other and unspecified injuries of ankle and foot (S99.-)
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 →- V54.16Aftercare for healing traumatic fracture of lower legapproximate
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 S89.321D
Is S89.321D billable?
- Yes. S89.321D is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
What does the "D" at the end of S89.321D mean?
- It is the 7th character for subsequent encounter for fracture with routine healing. Per the official guidelines, use it for encounters after active treatment, while the patient is healing or recovering.
Can S89.321D be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict S89.321D as a principal diagnosis.
Is S89.321D a CC or MCC?
- No. S89.321D is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does S89.321D group to?
- S89.321D is used in the MS-DRG v44.0 logic for MS-DRG 559 (Aftercare, Musculoskeletal System and Connective Tissue with MCC), MS-DRG 560 (Aftercare, Musculoskeletal System and Connective Tissue with CC) and MS-DRG 561 (Aftercare, Musculoskeletal System and Connective Tissue without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.