FY2027
MenuClose

ICD-10 Code for Knee Pain

Also searched as pain in knee

The ICD-10-CM code for knee pain depends on the side: M25.561 for the right side, M25.562 for the left and M25.569 when the side is not documented. M25.56 itself is a header code and cannot be billed. There is no bilateral code, so bilateral knee pain is reported with the right and left codes together. Valid for FY2027.

M25.56- is a header — not billableLaterality required

Knee pain ICD-10 codes at a glance

ConditionKnee pain
RightM25.561 — Pain in right knee
LeftM25.562 — Pain in left knee
UnspecifiedM25.569 — Pain in unspecified knee
BillableNo — M25.56 is a header; use a code beneath it
Alphabetic Index entryPain, joint, knee
Code setICD-10-CM FY2027, valid October 1, 2026 – September 30, 2027

What is the ICD-10 code for left knee pain?

The ICD-10-CM code for left knee pain is M25.562 — Pain in left knee. M25.562 is billable.

Is there an ICD-10 code for bilateral knee pain?

No. ICD-10-CM has no bilateral code for knee pain, so bilateral knee pain is reported with both M25.561 (right) and M25.562 (left).

“If no bilateral code is provided and the condition is bilateral, assign separate codes for both the left and right side.”
ICD-10-CM Official Guidelines, Section I.B.13

When can the unspecified-side code for knee pain be used?

The unspecified-side code for knee pain is M25.569 — Pain in unspecified knee. M25.569 is billable.

“If the side is not identified in the medical record, assign the code for the unspecified side.”
ICD-10-CM Official Guidelines, Section I.B.13
“Codes for "unspecified" side should rarely be used, such as when the documentation in the record is insufficient to determine the affected side and it is not possible to obtain clarification.”
ICD-10-CM Official Guidelines, Section I.B.13

Can you code knee pain when the cause is known?

Knee pain is a symptom rather than a diagnosis. The official guidelines allow a symptom code while a related definitive diagnosis has not been established, and a symptom routinely associated with a confirmed disease is not coded separately:

“Codes that describe symptoms and signs, as opposed to diagnoses, are acceptable for reporting purposes when a related definitive diagnosis has not been established (confirmed) by the provider.”
ICD-10-CM Official Guidelines, Section I.B.4
“Signs and symptoms that are associated routinely with a disease process should not be assigned as additional codes, unless otherwise instructed by the classification.”
ICD-10-CM Official Guidelines, Section I.B.5

What else changes the knee pain code?

When the record documents the pain as acute or chronic, a code from category G89 (for example G89.29, other chronic pain) can be added to the site code for more detail. Without that documentation — or a postprocedural, post-thoracotomy or neoplasm-related cause — G89 is not used.

“Codes in category G89, Pain, not elsewhere classified, may be used in conjunction with codes from other categories and chapters to provide more detail about acute or chronic pain and neoplasm-related pain, unless otherwise indicated below.”
ICD-10-CM Official Guidelines, Section I.C.6.b.1
“If the pain is not specified as acute or chronic, post-thoracotomy, postprocedural, or neoplasm-related, do not assign codes from category G89.”
ICD-10-CM Official Guidelines, Section I.C.6.b.1

What does the Tabular List say about M25.56?

The instructional notes that govern M25.56-, including those it inherits from its category and chapter. An Excludes1 note means the two codes are never reported together.

Excludes2 — not included here — inherited from Chapter 13

The conditions below are not part of M25.56, but a patient may have both at the same time. When documentation supports it, M25.56 and the excluded code may both be reported.

  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Excludes2 — not included here — inherited from M20-M25

The conditions below are not part of M25.56, but a patient may have both at the same time. When documentation supports it, M25.56 and the excluded code may both be reported.

  • joints of the spine (M40-M54)

Excludes2 — not included here — inherited from M25

The conditions below are not part of M25.56, but a patient may have both at the same time. When documentation supports it, M25.56 and the excluded code may both be reported.

  • abnormality of gait and mobility (R26.-)
  • acquired deformities of limb (M20-M21)
  • calcification of bursa (M71.4-)
  • calcification of shoulder (joint) (M75.3)
  • calcification of tendon (M65.2-)
  • difficulty in walking (R26.2)
  • temporomandibular joint disorder (M26.6-)

Excludes2 — not included here — inherited from M25.5

The conditions below are not part of M25.56, but a patient may have both at the same time. When documentation supports it, M25.56 and the excluded code may both be reported.

Codes, descriptions and Index entries are from the official ICD-10-CM FY2027 release. Guideline text is quoted from the ICD-10-CM Official Guidelines for Coding and Reporting FY 2027. A code must always be verified in the Tabular List before it is reported. Data sources