ICD-10-CM 2027 diagnosis code
M61Calcification and ossification of muscle
Not billable — use a more specific code
M61 is a header code, so it can't be reported by itself. Choose one of the 7 more specific codes beneath it.
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 M61
M61 is the ICD-10-CM diagnosis code for calcification and ossification of muscle. It belongs to block M60-M63 (disorders of muscles) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 7 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: M61.0 (traumatica), M61.1 (progressiva), M61.2 (muscle), M61.3 (s associated with burns), M61.4 (muscle), M61.5 (muscle) and M61.9 (unspecified).
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under M61
- M61.0Myositis ossificans traumatica
- M61.00Myositis ossificans traumatica, unspecified siteBillable
- M61.01Myositis ossificans traumatica, shoulder
- M61.02Myositis ossificans traumatica, upper arm
- M61.03Myositis ossificans traumatica, forearm
- M61.04Myositis ossificans traumatica, hand
- M61.05Myositis ossificans traumatica, thigh
- M61.06Myositis ossificans traumatica, lower leg
- M61.07Myositis ossificans traumatica, ankle and foot
- M61.08Myositis ossificans traumatica, other siteBillable
- M61.09Myositis ossificans traumatica, multiple sitesBillable
- M61.1Myositis ossificans progressiva
- M61.10Myositis ossificans progressiva, unspecified siteBillable
- M61.11Myositis ossificans progressiva, shoulder
- M61.12Myositis ossificans progressiva, upper arm
- M61.13Myositis ossificans progressiva, forearm
- M61.14Myositis ossificans progressiva, hand and finger(s)
- M61.141Myositis ossificans progressiva, right handBillable
- M61.142Myositis ossificans progressiva, left handBillable
- M61.143Myositis ossificans progressiva, unspecified handBillable
- M61.144Myositis ossificans progressiva, right finger(s)Billable
- M61.145Myositis ossificans progressiva, left finger(s)Billable
- M61.146Myositis ossificans progressiva, unspecified finger(s)Billable
- M61.15Myositis ossificans progressiva, thigh
- M61.16Myositis ossificans progressiva, lower leg
- M61.17Myositis ossificans progressiva, ankle, foot and toe(s)
- M61.171Myositis ossificans progressiva, right ankleBillable
- M61.172Myositis ossificans progressiva, left ankleBillable
- M61.173Myositis ossificans progressiva, unspecified ankleBillable
- M61.174Myositis ossificans progressiva, right footBillable
- M61.175Myositis ossificans progressiva, left footBillable
- M61.176Myositis ossificans progressiva, unspecified footBillable
- M61.177Myositis ossificans progressiva, right toe(s)Billable
- M61.178Myositis ossificans progressiva, left toe(s)Billable
- M61.179Myositis ossificans progressiva, unspecified toe(s)Billable
- M61.18Myositis ossificans progressiva, other siteBillable
- M61.19Myositis ossificans progressiva, multiple sitesBillable
- M61.2Paralytic calcification and ossification of muscle
- M61.20Paralytic calcification and ossification of muscle, unspecified siteBillable
- M61.21Paralytic calcification and ossification of muscle, shoulder
- M61.22Paralytic calcification and ossification of muscle, upper arm
- M61.23Paralytic calcification and ossification of muscle, forearm
- M61.24Paralytic calcification and ossification of muscle, hand
- M61.25Paralytic calcification and ossification of muscle, thigh
- M61.26Paralytic calcification and ossification of muscle, lower leg
- M61.27Paralytic calcification and ossification of muscle, ankle and foot
- M61.28Paralytic calcification and ossification of muscle, other siteBillable
- M61.29Paralytic calcification and ossification of muscle, multiple sitesBillable
- M61.3Calcification and ossification of muscles associated with burns
- M61.30Calcification and ossification of muscles associated with burns, unspecified siteBillable
- M61.31Calcification and ossification of muscles associated with burns, shoulder
- M61.32Calcification and ossification of muscles associated with burns, upper arm
- M61.33Calcification and ossification of muscles associated with burns, forearm
- M61.34Calcification and ossification of muscles associated with burns, hand
- M61.35Calcification and ossification of muscles associated with burns, thigh
- M61.36Calcification and ossification of muscles associated with burns, lower leg
- M61.37Calcification and ossification of muscles associated with burns, ankle and foot
- M61.371Calcification and ossification of muscles associated with burns, right ankle and footBillable
- M61.372Calcification and ossification of muscles associated with burns, left ankle and footBillable
- M61.379Calcification and ossification of muscles associated with burns, unspecified ankle and footBillable
- M61.38Calcification and ossification of muscles associated with burns, other siteBillable
- M61.39Calcification and ossification of muscles associated with burns, multiple sitesBillable
- M61.4Other calcification of muscle
- M61.40Other calcification of muscle, unspecified siteBillable
- M61.41Other calcification of muscle, shoulder
- M61.42Other calcification of muscle, upper arm
- M61.43Other calcification of muscle, forearm
- M61.44Other calcification of muscle, hand
- M61.45Other calcification of muscle, thigh
- M61.46Other calcification of muscle, lower leg
- M61.47Other calcification of muscle, ankle and foot
- M61.48Other calcification of muscle, other siteBillable
- M61.49Other calcification of muscle, multiple sitesBillable
- M61.5Other ossification of muscle
- M61.50Other ossification of muscle, unspecified siteBillable
- M61.51Other ossification of muscle, shoulder
- M61.52Other ossification of muscle, upper arm
- M61.53Other ossification of muscle, forearm
- M61.54Other ossification of muscle, hand
- M61.55Other ossification of muscle, thigh
- M61.56Other ossification of muscle, lower leg
- M61.57Other ossification of muscle, ankle and foot
- M61.58Other ossification of muscle, other siteBillable
- M61.59Other ossification of muscle, multiple sitesBillable
- M61.9Calcification and ossification of muscle, unspecifiedBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to M61.
Broader instructions also apply from M60-M63 Disorders of muscles and Chapter 13: Diseases of the musculoskeletal system and connective tissue.
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 M61
Is M61 billable?
- No. M61 is a header code. Report one of its more specific subcodes instead.