ICD-10-CM 2027 diagnosis code
M93.271Osteochondritis dissecans, right ankle and joints of right foot
M93.271 is a valid, billable ICD-10-CM code for osteochondritis dissecans, right ankle and joints of right foot. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Osteochondritis dissecans, r ankle and joints of right foot
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 M93.271
M93.271 is the ICD-10-CM diagnosis code for Osteochondritis dissecans, right ankle and joints of right foot. It belongs to category M93 (other osteochondropathies), block M91-M94 (Chondropathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within M93.27 (Osteochondritis dissecans of ankle and joints of foot), M93.271 is specifically for Osteochondritis dissecans, right ankle and joints of right foot. Related codes cover left ankle and joints of left foot (M93.272) and unspecified ankle and joints of foot (M93.279).
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 553 (Bone Diseases and Arthropathies with MCC, relative weight 1.2494) and DRG 554 (Bone Diseases and Arthropathies without MCC, relative weight 0.8331), 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 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 732.7 (Osteochondritis dissecans).
Notes that apply from higher levels
Instructions written at a parent level also apply to M93.271.
› From M93 Other osteochondropathies
- osteochondrosis of spine (M42.-)
Broader instructions also apply from M91-M94 Chondropathies and Chapter 13: Diseases of the musculoskeletal system and connective tissue.
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 →- 732.7Osteochondritis dissecansapproximate
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 M93.271
Is M93.271 billable?
- Yes. M93.271 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M93.271 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M93.271 as a principal diagnosis.
Is M93.271 a CC or MCC?
- No. M93.271 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does M93.271 group to?
- M93.271 is used in the MS-DRG v44.0 logic for MS-DRG 553 (Bone Diseases and Arthropathies with MCC) and MS-DRG 554 (Bone Diseases and Arthropathies 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 M93.271?
- The CMS General Equivalence Mappings map M93.271 to ICD-9-CM 732.7.