The Army said Wednesday that it had ordered a service-wide review of how its doctors diagnose psychiatric disorders, indicating that complaints about unfair diagnoses at a sprawling base in Washington State have been echoed on installations around the country.

The review, announced jointly by the Army secretary, John M. McHugh, and chief of staff, Gen. Raymond T. Odierno, will focus on whether consistent and accurate diagnoses are being issued by the disability evaluation system, which determines whether injured soldiers are fit to remain on duty.

Concerns about the system emerged last fall after soldiers at Joint Base Lewis-McChord in Tacoma told Senator Patty Murray, a Democrat of Washington, that their diagnoses of post-traumatic stress disorder had been changed by doctors at Madigan Army Medical Center to lesser conditions. The soldiers asserted that the changes were done to save the Army money.

That complaint seemed to gain credibility with the emergence of an internal Army memorandum in February that quoted a Madigan doctor saying that Army clinicians needed to be “good stewards” of taxpayer dollars and that a PTSD diagnosis could cost $1.5 million in disability compensation over a soldier’s lifetime.