Rotator cuff pain location diagram: Where each muscle hurts

A rotator cuff pain location diagram maps where each of the four cuff muscles sends pain. It tells you which muscle a patient’s shoulder complaint points to. Supraspinatus hurts at the side of the shoulder. Infraspinatus aches deep at the back, yet refers to the front. Teres minor stays at the back and side, while subscapularis reaches the back of the shoulder and the wrist.

That matters because referred pain rarely sits over the injured tendon. Read the map wrong and you test, treat and code the wrong structure. So the walkthrough below starts where every assessment should, with the spot the patient points to.

Key takeaways

Each of the four rotator cuff muscles refers pain to its own zone, often well away from the injured tendon.

Supraspinatus refers to the side of the shoulder and upper arm, while infraspinatus aches at the back and refers to the front.

Teres minor refers to the back and side of the shoulder, and subscapularis to the posterior shoulder, scapula, back of the arm and wrist.

Pain location narrows the suspect, but cuff tests such as the empty can, lag signs and bear hug confirm it.

Record the marked area, the suspected muscle and the test results together, so the note supports the ICD-10 code you choose.

Each rotator cuff muscle refers pain to its own zone

Start with anatomy. Each muscle sits in a different part of the shoulder complex. Each also has a typical referral pattern when it’s strained, torn or carrying an active trigger point.

Read the other way round, the same patterns become a lookup. Start where the patient marks the chart, then find the muscle to suspect and the test that checks it.

Supraspinatus pain sits on the side of the shoulder

The supraspinatus is the most commonly torn rotator cuff muscle. Its pain sits on the outer edge of the shoulder and often spreads down the upper arm over the deltoid. Patients feel it most with overhead lifting, reaching and raising the arm out to the side. Supraspinatus problems also frequently coexist with shoulder impingement.

Infraspinatus pain shows up at the front

Infraspinatus injury feels like a deep ache at the back of the shoulder. Oddly, it refers to the front of the shoulder and down the arm. Night pain is common in rotator cuff problems and often affects sleeping on the shoulder. Patients also report pain when reaching across the body, such as fastening a seatbelt, which is cross-body adduction.

Teres minor and subscapularis are easy to overlook

Teres minor produces pain at the back and side of the shoulder. It’s frequently missed because its pattern overlaps with infraspinatus. Subscapularis is often overlooked too. It refers pain to the back of the shoulder and scapula, down the back of the arm, and to a band around the wrist.

Suspect subscapularis in throwers and in patients who struggle to rotate the arm outward. The belly press test is a quick way to check its strength alongside the bear hug.

Trigger points explain pain far from the tear

Myofascial trigger points in the cuff produce referred pain that spreads well beyond the muscle itself. The classic reference, Travell & Simons’ Myofascial Pain and Dysfunction, documents these patterns in detail.

Infraspinatus trigger points typically refer to the front of the shoulder. Subscapularis can refer to the wrist, and supraspinatus radiates along the side of the arm. When a patient marks a body chart, these patterns help you separate trigger point pain from a structural tear pattern.

How to use a rotator cuff pain location diagram in an assessment

The diagram works best as one step in a structured exam. Here’s the order that keeps it useful.

1. Take the history first. Ask the patient to describe the pain before they see the diagram. Note their words, the side, and any radiation.
2. Hand over the diagram. Ask them to mark or point to where it hurts. Most will mark the side, back or front of the shoulder, depending on the muscle involved.
3. Match the mark to a suspect. Side-of-shoulder pain with overhead activity points to supraspinatus. A deep posterior ache that refers forward, worse lying on that side, suggests infraspinatus. Pain at the back of the shoulder and scapula with a wrist band suggests subscapularis.
4. Record it in anatomical terms. For example: “Patient marks lateral shoulder and mid-arm, consistent with supraspinatus referral. No wrist pain reported.”
5. Test to confirm. Once the pain is mapped, run the cuff tests that match your hypothesis.

Rule out the conditions that mimic a cuff problem

Several shoulder conditions hurt in the same places. The usual mimics are impingement, acromioclavicular (AC) joint arthritis, biceps tendinopathy and cervical radiculopathy. Use the marked area to shortlist, then lean on the differentiators below.

Clinical tests confirm what the pain map suggests

Once the pain is mapped, run standardized orthopedic tests to confirm cuff involvement. Common tests include the empty can, drop arm, external rotation lag sign and bear hug (subscapularis) for the cuff. Hawkins-Kennedy and Neer sit alongside them as impingement screens.

For technique and how to read each result, see our guide to shoulder special tests. Combined with the marked area, the results guide whether to refer for imaging or specialist review.

A worked example from marked chart to note

Here’s how the pieces fit for one illustrative patient. A house painter in his fifties reports right shoulder pain that’s worse working overhead.

• Diagram: he marks the outer right shoulder and the upper arm.
• Suspect: that pattern, plus pain overhead, points to supraspinatus.
• Tests: the empty can test is painful and weak, and the drop arm test is negative.
• Note: “Right lateral shoulder and upper arm pain on marking, consistent with supraspinatus referral. Empty can positive.”
• Next step: conservative care starts, and imaging is planned if strength doesn’t improve.

Notice what the note doesn’t say. It doesn’t call the tear partial or complete, because nothing has confirmed a tear yet. That restraint matters when you pick a code.

ICD-10 codes follow what the note can prove

Accurate coding supports both billing and the clinical record. Common ICD-10 codes for nontraumatic rotator cuff tears include the following.

• M75.101 / M75.102: unspecified rotator cuff tear or rupture, not specified as traumatic, right or left shoulder.
• M75.111 / M75.112: incomplete rotator cuff tear or rupture, not specified as traumatic, right or left shoulder.
• M75.121 / M75.122: complete rotator cuff tear or rupture, not specified as traumatic, right or left shoulder.
• M75.801 / M75.802: other shoulder lesions, right or left shoulder.

A tear from a recent injury is coded from the injury chapter instead, under S46.0. Until a tear is confirmed, the symptom code M25.511 (pain in right shoulder) or M25.512 (left) is often the honest choice.

Before you submit, check the note

• The side is stated in the note and matches the code.
• “Incomplete” or “complete” appears only when imaging or surgery confirmed it.
• A recent trauma is coded as an injury, not as a nontraumatic M75 tear.
• The marked area, suspected muscle and test results sit together in one entry.
• The baseline chart is dated, so follow-up comparisons hold up.

The mistakes that trip claims up are usually simple. An unspecified-side code goes out when the side is in the note. A tear gets called complete on clinical tests alone. Or wrist pain is documented without linking it to the shoulder findings.

Management follows the muscle you mapped

Once the cuff is confirmed, management usually begins with conservative care. That means relative rest, ice or heat, gentle range-of-motion work and progressive strengthening aimed at the affected muscle.

The diagram guides exercise choice. Supraspinatus pain calls for scapular stabilization and controlled overhead work. Infraspinatus pain responds well to external rotation strengthening. Subscapularis involvement calls for internal rotation and pressing exercises.

Most uncomplicated cuff strains and mild tendinopathy improve within six to 12 weeks of consistent therapy. Partial-thickness tears may need three to six months, while full-thickness tears often warrant orthopedic consultation and imaging. Track progress on a range of motion chart next to the pain diagram.

Explain the referral pattern when you document trigger points

When you find a cuff trigger point on palpation, the diagram helps you explain it to the patient. Many are surprised that a tender spot behind the shoulder causes their pain at the front. That explanation eases worry and improves follow-through with hands-on therapy and home exercise.

Describe both the trigger point and its referral in the note. For example: “Tender infraspinatus trigger point. Sustained pressure reproduced anterior shoulder pain, consistent with infraspinatus referral.”

Sports medicine practices get particular value from this. A dated baseline marking shows whether infraspinatus pain is shrinking, which helps both patient conversations and clinical reasoning.

How Pabau keeps shoulder pain maps in the patient record

Many practices still mark pain on paper body charts, then scan them or lose them between visits. Pabau, the practice management platform we build for clinicians, moves that step online. Patients complete digital intake forms before the appointment through a patient portal, including where their shoulder hurts.

During the session, Pabau Scribe, our AI scribe, drafts the treatment note while you examine. You spend less time typing trigger point findings and more time with the patient. Forms, notes and test results land in one record, the core of a connected physical therapy EMR.

The outcome is a pain map you can compare at every follow-up. When the marked area shrinks, you have dated evidence of progress for the patient and for discharge planning.

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Capture pain location data, document trigger point findings, and track treatment progress in one integrated clinical record.

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Conclusion

Treat the patient’s marked area as a starting hypothesis. Where it lands narrows the suspect to one or two muscles. The tests then decide, and the note records only what they proved.

Do that consistently and two things change. Your treatment targets the right muscle sooner, and your codes stay defensible. The trade-off is a few extra minutes at intake, which a dated baseline repays at every follow-up.

Book a demo to see how Pabau keeps pain maps, test results and treatment notes together for your shoulder patients.

Continue your research

Working through a full shoulder workup? Shoulder exam: A complete clinical guide walks through history, inspection, palpation and special tests in order.

Need to map pain beyond the shoulder? Body pain chart template gives you front and back silhouettes with a 0-10 severity scale.

Planning the rehab phase? Scapular stabilization exercises covers 10 exercises that support shoulder recovery.

Looking for software built around physical therapy? Physical therapy EMR shows how Pabau handles booking, notes and records for PT practices.

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