ICD-10-CM 2027 diagnosis code
M62.161Other rupture of muscle (nontraumatic), right lower leg
M62.161 is a valid, billable ICD-10-CM code for other rupture of muscle (nontraumatic), right lower leg. 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 M62.161
M62.161 is the ICD-10-CM diagnosis code for other rupture of muscle (nontraumatic), right lower leg. It belongs to category M62 (other disorders of muscle), block M60-M63 (disorders of muscles) 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 M62.16 (other rupture of muscle (nontraumatic), lower leg), M62.161 is specifically for other rupture of muscle (nontraumatic), right lower leg. Related codes cover left lower leg (M62.162) and unspecified lower leg (M62.169).
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 557 (Tendonitis, Myositis and Bursitis with MCC, relative weight 1.489) and DRG 558 (Tendonitis, Myositis and Bursitis without MCC, relative weight 0.8875), 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 728.83 (rupture of muscle, nontraumatic).
Notes that apply from higher levels
Instructions written at a parent level also apply to M62.161.
› From M62.1 Other rupture of muscle (nontraumatic)
- traumatic rupture of muscle - see strain of muscle by body region
- rupture of tendon (M66.-)
Broader instructions also apply from M60-M63 Disorders of muscles 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 →- 728.83Rupture of muscle, nontraumaticapproximate
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 M62.161
Is M62.161 billable?
- Yes. M62.161 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M62.161 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M62.161 as a principal diagnosis.
Is M62.161 a CC or MCC?
- No. M62.161 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does M62.161 group to?
- M62.161 is used in the MS-DRG v44.0 logic for MS-DRG 557 (Tendonitis, Myositis and Bursitis with MCC) and MS-DRG 558 (Tendonitis, Myositis and Bursitis 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 M62.161?
- The CMS General Equivalence Mappings map M62.161 to ICD-9-CM 728.83.