Pyogenic arthritis (M00) ICD-10-CM
The M00 code range covers pyogenic arthritis with 130 ICD-10-CM diagnosis codes. 97 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- infection and inflammatory reaction due to internal joint prosthesis T84.5
Codes in the M00 Range 130 codes · 97 billable
- M00 Pyogenic arthritisNon-billable
- M00.0 Staphylococcal arthritis and polyarthritisNon-billable
- M00.00 Staphylococcal arthritis, unspecified joint
- M00.01 Staphylococcal arthritis, shoulderNon-billable
- M00.011 Staphylococcal arthritis, right shoulder
- M00.012 Staphylococcal arthritis, left shoulder
- M00.019 Staphylococcal arthritis, unspecified shoulder
- M00.02 Staphylococcal arthritis, elbowNon-billable
- M00.021 Staphylococcal arthritis, right elbow
- M00.022 Staphylococcal arthritis, left elbow
- M00.029 Staphylococcal arthritis, unspecified elbow
- M00.03 Staphylococcal arthritis, wristNon-billable
- M00.031 Staphylococcal arthritis, right wrist
- M00.032 Staphylococcal arthritis, left wrist
- M00.039 Staphylococcal arthritis, unspecified wrist
- M00.04 Staphylococcal arthritis, handNon-billable
- M00.041 Staphylococcal arthritis, right hand
- M00.042 Staphylococcal arthritis, left hand
- M00.049 Staphylococcal arthritis, unspecified hand
- M00.05 Staphylococcal arthritis, hipNon-billable
- M00.051 Staphylococcal arthritis, right hip
- M00.052 Staphylococcal arthritis, left hip
- M00.059 Staphylococcal arthritis, unspecified hip
- M00.06 Staphylococcal arthritis, kneeNon-billable
- M00.061 Staphylococcal arthritis, right knee
- M00.062 Staphylococcal arthritis, left knee
- M00.069 Staphylococcal arthritis, unspecified knee
- M00.07 Staphylococcal arthritis, ankle and footNon-billable
- M00.071 Staphylococcal arthritis, right ankle and foot
- M00.072 Staphylococcal arthritis, left ankle and foot
- M00.079 Staphylococcal arthritis, unspecified ankle and foot
- M00.08 Staphylococcal arthritis, vertebrae
- M00.09 Staphylococcal polyarthritis
- M00.1 Pneumococcal arthritis and polyarthritisNon-billable
- M00.10 Pneumococcal arthritis, unspecified joint
- M00.11 Pneumococcal arthritis, shoulderNon-billable
- M00.111 Pneumococcal arthritis, right shoulder
- M00.112 Pneumococcal arthritis, left shoulder
- M00.119 Pneumococcal arthritis, unspecified shoulder
- M00.12 Pneumococcal arthritis, elbowNon-billable
- M00.121 Pneumococcal arthritis, right elbow
- M00.122 Pneumococcal arthritis, left elbow
- M00.129 Pneumococcal arthritis, unspecified elbow
- M00.13 Pneumococcal arthritis, wristNon-billable
- M00.131 Pneumococcal arthritis, right wrist
- M00.132 Pneumococcal arthritis, left wrist
- M00.139 Pneumococcal arthritis, unspecified wrist
- M00.14 Pneumococcal arthritis, handNon-billable
- M00.141 Pneumococcal arthritis, right hand
- M00.142 Pneumococcal arthritis, left hand
- M00.149 Pneumococcal arthritis, unspecified hand
- M00.15 Pneumococcal arthritis, hipNon-billable
- M00.151 Pneumococcal arthritis, right hip
- M00.152 Pneumococcal arthritis, left hip
- M00.159 Pneumococcal arthritis, unspecified hip
- M00.16 Pneumococcal arthritis, kneeNon-billable
- M00.161 Pneumococcal arthritis, right knee
- M00.162 Pneumococcal arthritis, left knee
- M00.169 Pneumococcal arthritis, unspecified knee
- M00.17 Pneumococcal arthritis, ankle and footNon-billable
- M00.171 Pneumococcal arthritis, right ankle and foot
- M00.172 Pneumococcal arthritis, left ankle and foot
- M00.179 Pneumococcal arthritis, unspecified ankle and foot
- M00.18 Pneumococcal arthritis, vertebrae
- M00.19 Pneumococcal polyarthritis
- M00.2 Other streptococcal arthritis and polyarthritisNon-billable
- M00.20 Other streptococcal arthritis, unspecified joint
- M00.21 Other streptococcal arthritis, shoulderNon-billable
- M00.211 Other streptococcal arthritis, right shoulder
- M00.212 Other streptococcal arthritis, left shoulder
- M00.219 Other streptococcal arthritis, unspecified shoulder
- M00.22 Other streptococcal arthritis, elbowNon-billable
- M00.221 Other streptococcal arthritis, right elbow
- M00.222 Other streptococcal arthritis, left elbow
- M00.229 Other streptococcal arthritis, unspecified elbow
- M00.23 Other streptococcal arthritis, wristNon-billable
- M00.231 Other streptococcal arthritis, right wrist
- M00.232 Other streptococcal arthritis, left wrist
- M00.239 Other streptococcal arthritis, unspecified wrist
- M00.24 Other streptococcal arthritis, handNon-billable
- M00.241 Other streptococcal arthritis, right hand
- M00.242 Other streptococcal arthritis, left hand
- M00.249 Other streptococcal arthritis, unspecified hand
- M00.25 Other streptococcal arthritis, hipNon-billable
- M00.251 Other streptococcal arthritis, right hip
- M00.252 Other streptococcal arthritis, left hip
- M00.259 Other streptococcal arthritis, unspecified hip
- M00.26 Other streptococcal arthritis, kneeNon-billable
- M00.261 Other streptococcal arthritis, right knee
- M00.262 Other streptococcal arthritis, left knee
- M00.269 Other streptococcal arthritis, unspecified knee
- M00.27 Other streptococcal arthritis, ankle and footNon-billable
- M00.271 Other streptococcal arthritis, right ankle and foot
- M00.272 Other streptococcal arthritis, left ankle and foot
- M00.279 Other streptococcal arthritis, unspecified ankle and foot
- M00.28 Other streptococcal arthritis, vertebrae
- M00.29 Other streptococcal polyarthritis
- M00.8 Arthritis and polyarthritis due to other bacteriaNon-billable
- M00.80 Arthritis due to other bacteria, unspecified joint
- M00.81 Arthritis due to other bacteria, shoulderNon-billable
- M00.811 Arthritis due to other bacteria, right shoulder
- M00.812 Arthritis due to other bacteria, left shoulder
- M00.819 Arthritis due to other bacteria, unspecified shoulder
- M00.82 Arthritis due to other bacteria, elbowNon-billable
- M00.821 Arthritis due to other bacteria, right elbow
- M00.822 Arthritis due to other bacteria, left elbow
- M00.829 Arthritis due to other bacteria, unspecified elbow
- M00.83 Arthritis due to other bacteria, wristNon-billable
- M00.831 Arthritis due to other bacteria, right wrist
- M00.832 Arthritis due to other bacteria, left wrist
- M00.839 Arthritis due to other bacteria, unspecified wrist
- M00.84 Arthritis due to other bacteria, handNon-billable
- M00.841 Arthritis due to other bacteria, right hand
- M00.842 Arthritis due to other bacteria, left hand
- M00.849 Arthritis due to other bacteria, unspecified hand
- M00.85 Arthritis due to other bacteria, hipNon-billable
- M00.851 Arthritis due to other bacteria, right hip
- M00.852 Arthritis due to other bacteria, left hip
- M00.859 Arthritis due to other bacteria, unspecified hip
- M00.86 Arthritis due to other bacteria, kneeNon-billable
- M00.861 Arthritis due to other bacteria, right knee
- M00.862 Arthritis due to other bacteria, left knee
- M00.869 Arthritis due to other bacteria, unspecified knee
- M00.87 Arthritis due to other bacteria, ankle and footNon-billable
- M00.871 Arthritis due to other bacteria, right ankle and foot
- M00.872 Arthritis due to other bacteria, left ankle and foot
- M00.879 Arthritis due to other bacteria, unspecified ankle and foot
- M00.88 Arthritis due to other bacteria, vertebrae
- M00.89 Polyarthritis due to other bacteria
- M00.9 Pyogenic arthritis, unspecified
About the M00 Code Range
ICD-10 code M00 covers pyogenic arthritis, a bacterial infection that causes inflammation in joints. These codes specifically identify infections caused by different bacteria, including staphylococcal, pneumococcal, other streptococci, and various other bacteria, with detailed designations for affected joints.
This section's codes distinguish between infections of specific joints like the shoulder, elbow, wrist, hand, hip, knee, ankle, foot, and vertebrae, as well as cases involving multiple joints (polyarthritis). For example, M00.00 codes staphylococcal arthritis in an unspecified joint, connecting to synonymous terms such as "infective polyarthritis caused by bacteria" or "staphylococcal arthritis and polyarthritis," assisting medical coders in selecting the correct ICD-10 code for staphylococcal joint infections. Similarly, M00.10 represents pneumococcal arthritis, with detailed subcodes for specific joints, helping precisely capture infections caused by Streptococcus pneumoniae.
The detailed structure of M00 allows healthcare professionals to accurately code and differentiate bacterial arthritis types and locations. Using specific codes helps in clear documentation of inpatient or outpatient care for pyogenic arthritis, facilitating proper treatment and follow-up. The inclusion of specific joints and bacterial causes within the ICD-10 code for pyogenic arthritis aids in pinpointing appropriate diagnoses across various healthcare settings.
Questions About This Page
How many billable codes are in the M00 range?
Of the 130 codes in this range, 97 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the M00 range classify?
The range classifies pyogenic arthritis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
