Patient presents with complaints consistent with right Achilles tendinitis.  Symptoms include posterior heel pain, Achilles tendon pain, and pain with ankle dorsiflexion.  Onset of symptoms occurred gradually over the past [duration] weeks months and is exacerbated by activities such as running, jumping, and prolonged standing.  The patient denies any specific trauma or injury to the area.  Physical examination reveals tenderness to palpation along the right Achilles tendon, thickening of the tendon, and crepitus with active and passive ankle range of motion.  Pain is localized to the right Achilles tendon region, without radiation.  No ecchymosis or edema is noted.  Thompson test is negative.  Diagnosis of right Achilles tendinitis is made based on patient history, physical exam findings, and clinical presentation.  Differential diagnoses considered include Achilles tendon rupture, retrocalcaneal bursitis, and plantar fasciitis.  Conservative treatment plan includes rest, ice, compression, elevation (RICE), nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen, and activity modification.  Patient education provided regarding proper stretching and strengthening exercises for the Achilles tendon and calf muscles.  Referral to physical therapy is recommended for rehabilitation and functional restoration.  Follow-up appointment scheduled in [duration] weeks to assess response to treatment.  ICD-10 code M76.61, Right Achilles tendinitis.