ICD-10-CM 2027 diagnosis code
M84.650SPathological fracture in other disease, pelvis, sequela
M84.650S is a valid, billable ICD-10-CM code for pathological fracture in other disease, pelvis, sequela. 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 M84.650S
M84.650S is the ICD-10-CM diagnosis code for pathological fracture in other disease, pelvis, sequela. It belongs to category M84 (disorder of continuity of bone), block M80-M85 (disorders of bone density and structure) 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.
The 7th character "S" means sequela: use it for complications or conditions that arise as a direct result of the original condition.
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 551 (Medical Back Problems with MCC, relative weight 1.6358) and DRG 552 (Medical Back Problems without MCC, relative weight 0.9584), 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 905.1 (late effect of fracture of spine and trunk without mention of spinal cord lesion).
7th character
Ssequela
CC/MCC status for this injury by encounter: CC for A, K, P; Neither CC nor MCC for D, G, S.
Other encounter types for M84.650:
Notes that apply from higher levels
Instructions written at a parent level also apply to M84.650S.
› From M84.6 Pathological fracture in other disease
- pathological fracture in osteoporosis (M80.-)
- underlying condition
› From M84 Disorder of continuity of bone
- traumatic fracture of bone-see fracture, by site
Broader instructions also apply from 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 →- 905.1Late effect of fracture of spine and trunk without mention of spinal cord lesionapproximate
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 M84.650S
Is M84.650S billable?
- Yes. M84.650S is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
What does the "S" at the end of M84.650S mean?
- It is the 7th character for sequela. Per the official guidelines, use it for complications or conditions that arise as a direct result of the original condition.
Can M84.650S be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M84.650S as a principal diagnosis.
Is M84.650S a CC or MCC?
- No. M84.650S is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does M84.650S group to?
- M84.650S is used in the MS-DRG v44.0 logic for MS-DRG 551 (Medical Back Problems with MCC) and MS-DRG 552 (Medical Back Problems 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 M84.650S?
- The CMS General Equivalence Mappings map M84.650S to ICD-9-CM 905.1.